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<article article-type="research-article" dtd-version="1.1" specific-use="sps-1.9" xml:lang="en" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">
<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">Indian Journal of Mental Health and Neurosciences</journal-id>
<journal-id journal-id-type="publisher-id">IJMHNS</journal-id>
<journal-title-group>
<journal-title>Indian Journal of Mental Health and Neurosciences</journal-title>
<abbrev-journal-title abbrev-type="publisher">IJMHNS</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2581-9445</issn>
<publisher>
<publisher-name>Indian Psychiatric Society - Tamil Nadu</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.32746/ijmhns.2018.v1.i1.2</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Review Article</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>First-Episode Psychosis Research in India: A Review</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Raghavan</surname>
<given-names>Vijaya</given-names>
</name>
<xref ref-type="corresp" rid="c001"><sup>&#x002A;</sup></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Mohan</surname>
<given-names>Greeshma</given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Jaiswal</surname>
<given-names>Seema</given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Rangaswamy</surname>
<given-names>Thara</given-names>
</name>
</contrib>
</contrib-group>
<aff>
<institution content-type="original">Schizophrenia Research Foudation</institution>
<institution content-type="orgname">Schizophrenia Research Foudation</institution>
</aff>
<author-notes>
<corresp id="c001"><bold>Corresponding Author:</bold> Dr. Vijayaraghavan Schizophrenia Research Foundation, R/7A, North Main Road, Anna Nagar West Extension, Chennai, Tamil Nadu, India &#x2013; 600101. email: <email>vijayaraghavan@scarfindia.org</email></corresp>
</author-notes>
<pub-date date-type="pub" publication-format="electronic">
<day>02</day>
<month>09</month>
<year>2025</year>
</pub-date>
<pub-date date-type="collection" publication-format="electronic">
<year>2025</year>
</pub-date>
<volume>1</volume>
<issue>1</issue>
<fpage>27</fpage>
<lpage>37</lpage>
<permissions>
<copyright-statement>Copyright &#x00A9; 2025 Indian Psychiatric Society &#x2014; Tamil Nadu Branch</copyright-statement>
<copyright-year>2025</copyright-year>
<copyright-holder>Indian Psychiatric Society &#x2014; Tamil Nadu Branch</copyright-holder>
<license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/" xml:lang="en">
<license-p>This is an open access article distributed under the terms of the Creative Commons license.</license-p>
</license>
</permissions>
<abstract>
<title>ABSTRACT</title>
<sec>
<title>Background:</title>
<p>With the growth of early intervention services for psychosis worldwide, it is imperative to understand the current knowledge on first-episode psychosis (FEP) from Indian context. Hence, the purpose of this review is to comprehensively examine the research studies on FEP from India. This would help to compare and contrast with other countries, develop specialist early intervention services and enlist research priorities pertaining to FEP.</p>
</sec>
<sec>
<title>Methods:</title>
<p>A Boolean search of articles published from January 1990 to March 2018 in electronic database of PubMed and Google Scholar was carried out and original research studies done on first-episode psychosis in India were incorporated in the current review. Case reports and review articles were excluded.</p>
</sec>
<sec>
<title>Results:</title>
<p>A total of 31 research studies were included for the review and classified into different subheadings of convenience.</p>
</sec>
<sec>
<title>Conclusion:</title>
<p>Even though the number of studies in Indian context pertaining to FEP is comparatively less than other western literature, the available results indicate certain characteristic similarities and differences in FEP from other parts of the world. We have also discussed on the importance of early intervention in FEP and the necessity for the creation of specialist early intervention services for mental health disorders.</p>
</sec>
</abstract>
<kwd-group xml:lang="en">
<title>Keywords:</title>
<kwd>First-episode psychosis</kwd>
<kwd>Research</kwd>
<kwd>India</kwd>
</kwd-group>
<counts>
<fig-count count="1"/>
<table-count count="1"/>
<ref-count count="52"/>
</counts>
</article-meta>
</front>
<body>
<sec sec-type="intro">
<title>INTRODUCTION</title>
<p>First-episode psychosis (FEP) is a major health concern worldwide.<sup><xref ref-type="bibr" rid="B1">1</xref></sup> First-episode psychosis is the first presentation of psychotic symptoms and usually occurs in the adolescence or young adulthood.<sup><xref ref-type="bibr" rid="B2">2</xref></sup> Individuals with first-episode psychosis present wit<sup>i</sup>h positive (hallucinations and delusions), negative (apathy and flat affect) and/or cognitive symptoms (attention and memory deficits).<sup><xref ref-type="bibr" rid="B3">3</xref></sup> The effect of first-episode psychosis on the individual is immense as it can lead to social disengagement and difficulties in maintaining daily activities. Individuals experiencing first-episode psychosis often present to the Emergency Department of a hospital, with multiple problems, such as aggressive behaviour, suicidal tendencies, and substance misuse, and frequently admitted as involuntary patients. <sup>ii <xref ref-type="bibr" rid="B4">4</xref></sup> Caregivers and other family members could suffer distress often due to aggressive behavior leading to physical and emotional burden of care. As with other psychiatric disorders, stigma and lack of awareness associated with first-episode psychosis is huge and it adversely affects the treatment seeking behavior and early treatment referrals in general population<sup><xref ref-type="bibr" rid="B5">5</xref>.</sup></p>
<p>Over the past two decades, there has been a great upsurge in the interest shown in studies focusing on early intervention for psychosis and this has resulted in many specialised programs worldwide to provide early and timely care for people with psychotic disorders.<sup><xref ref-type="bibr" rid="B6">6</xref></sup> Due to this, the duration of untreated psychosis has reduced and has led to better outcomes in individuals with firstepisode psychosis such as decreased hospitalisation/rehospitalizations, early symptom relief and few relapses.<sup><xref ref-type="bibr" rid="B7">7</xref></sup> Hence, it is important to educate the health-care professionals and the community on early symptoms of FEP, proper referral and continued support. These interventions could help reduce stigma on mental illness in the community and prevent delays in gaining appropriate early treatment from mental health professionals.</p>
<p>The research on first episode psychosis in India is increasing. It is important to keep abreast of these studies from India as the insights from them will extensively inform the clinicians and other mental health professionals in better management of individuals with first episode psychosis. The objective of this review is to provide an overview of first episode research in India.</p>
</sec>
<sec sec-type="materials|methods">
<title>MATERIALS AND METHODS</title>
<sec>
<title>Search strategy</title>
<p>A comprehensive search was carried out using electronic databases of PubMed and Google Scholar for the following combinations: &#x201C;First episode psychosis&#x201D; OR &#x201C;First episode schizophrenia&#x201D; OR &#x201C;First episode mania&#x201D; OR &#x201C;First episode bipolar&#x201D; AND &#x201C;India&#x201D; to identify the research publications from India on FEP. Cross references from the articles and grey literature were also screened.</p>
</sec>
<sec>
<title>Study selection</title>
<p>In this review, we had included peer reviewed studies conducted on individuals with first episode psychosis in India. We had excluded case reports, case series, perspectives and previous review articles on first episode psychosis from this review.</p>
</sec>
<sec>
<title>Organisation</title>
<p>After the search, the identified research articles were screened as per the above-mentioned inclusion and exclusion criteria and organised into various themes such as epidemiology, etiology and pathophysiology, clinical features and comorbidity, management, course and outcome, caregiver burden and interventions.</p>
</sec>
</sec>
<sec sec-type="results">
<title>RESULTS</title>
<p>Out of 109 research articles screened, 31 were found to be eligible to be included in the current review (<bold><xref ref-type="fig" rid="F1">Fig 1</xref></bold>). All the studies included in this review with their main findings, classified according to different themes, are given in <bold><xref ref-type="table" rid="T1">Table 1</xref></bold>.</p>
<fig position="float" id="F1">
<label>Fig 1.</label>
<caption>
<title>Literature review search flowchart</title>
</caption>
<graphic xlink:href="ijmhns2581-9445-v1-n01-27-37-gf01.jpg"/>
</fig>
<table-wrap id="T1" position="float">
<table cellpadding="5" cellspacing="5" frame="box" rules="all">
<thead>
<tr>
<th align="left" valign="top">S.No.</th>
<th align="left" valign="top">Author</th>
<th align="left" valign="top">Type of study</th>
<th align="left" valign="top">Subject Characteristics</th>
<th align="left" valign="top">Methodology</th>
<th align="left" valign="top">Main findings</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" valign="top"><bold><italic>Epidemiology</italic></bold></td>
</tr>
<tr>
<td align="left" valign="top">1.</td>
<td align="left" valign="top">Verma et al., 1997.<sup><xref ref-type="bibr" rid="B8">8</xref></sup></td>
<td align="left" valign="top">Multi-centric epidemiological study</td>
<td align="left" valign="top">Urban and rural catchment areas with populations of<break/>348,786 and<break/>103,865, respectively</td>
<td align="left" valign="top">Diagnosis and clinical assessment through<break/>&#x2022;Structured interviews<break/>&#x2022;Scales</td>
<td align="left" valign="top">&#x2022;50% of the individuals with FEP in the age group of 15-24<break/>&#x2022;Male preponderance in younger age group and of females in the older age group</td>
</tr>
<tr>
<td align="left" valign="top"><bold><italic>Etiology/Pathophysiology</italic></bold></td>
</tr>
<tr>
<td align="left" valign="top">2.</td>
<td align="left" valign="top">Choudhary et al., 2015.<sup><xref ref-type="bibr" rid="B9">9</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 20</td>
<td align="left" valign="top">&#x2022;Positron Emission Topography (PET) scan</td>
<td align="left" valign="top">&#x2022;Hypoactivation of bilateral prefrontal cortices and fusiform gyrii, with significant hyperactivation of bilateral basal ganglia and left precuneus in FEP<break/>&#x2022;Positive correlation of metabolism in prefrontal cortex and performance indices on emotions domain was seen</td>
</tr>
<tr>
<td align="left" valign="top">3.</td>
<td align="left" valign="top">Jayakumar et al., 2005.<sup><xref ref-type="bibr" rid="B10">10</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">First episode schizophrenia = 18<break/>Controls = 18</td>
<td align="left" valign="top">&#x2022;Magnetic Resonance Imaging (MRI) scan</td>
<td align="left" valign="top">&#x2022;Significantly smaller global grey matter and greater global cerebrospinal fluid (CSF) in individuals with schizophrenia</td>
</tr>
<tr>
<td align="left" valign="top">4.</td>
<td align="left" valign="top">Kale et al., 2008.<sup><xref ref-type="bibr" rid="B11">11</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 31<break/>Controls = 46</td>
<td align="left" valign="top">&#x2022;Fatty acid analysis from RBCs, plasma and CSF</td>
<td align="left" valign="top">&#x2022;The plasma Essential Poly Unsaturated Fatty Acids (EPUFAs) levels were similar in both groups<break/>&#x2022;Among the EPUFAs enriched in the brain, predominantly docosahexaenoic acid (DHA) levels were lower in RBC whereas higher in CSF in male more than female patients.</td>
</tr>
<tr>
<td align="left" valign="top">5.</td>
<td align="left" valign="top">Kale et al., 2010<sup><xref ref-type="bibr" rid="B12">12</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 31<break/>Controls = 48</td>
<td align="left" valign="top">&#x2022;Fatty acid analysis<break/>&#x2022;Folate, vitamin B12, homocysteine, and cortisol determinations</td>
<td align="left" valign="top">&#x2022;Significantly lower levels of folate and vitamin B12 in plasma and folate in red blood cells were observed in FEP compared to controls with significant increase in plasma homocysteine and cortisol levels<break/>&#x2022;Significantly reduced levels of membrane DHA were also observed in FEP<break/>compared to controls</td>
</tr>
<tr>
<td align="left" valign="top">6.</td>
<td align="left" valign="top">Saravanan et al., 2007.<sup><xref ref-type="bibr" rid="B14">14</xref></sup></td>
<td align="left" valign="top">Qualitative study</td>
<td align="left" valign="top">FEP = 131</td>
<td align="left" valign="top">&#x2022;Explanatory models</td>
<td align="left" valign="top">&#x2022;The majority of patients (70%) considered spiritual and mystical factors as the cause of their predicament; 22% held multiple models of illness<break/>&#x2022;Holding of spiritual/mystical models is associated with female sex, low education and visits to traditional healers</td>
</tr>
<tr>
<td align="left" valign="top">7.</td>
<td align="left" valign="top">Kavoor et al., 2014.<sup><xref ref-type="bibr" rid="B13">13</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 60</td>
<td align="left" valign="top">&#x2022;Barratt impulsiveness scale-version 11<break/>&#x2022;Young Mania Rating Scale<break/>&#x2022;Lipid profile</td>
<td align="left" valign="top">&#x2022;Significant negative correlation and inverse linear relationship between Total Cholesterol (TC), Triglycerides (TG), Very Low Density Lipoproteins (VLDL) and Body Mass Index (BMI) with attentional impulsivity.</td>
</tr>
<tr>
<td align="left" valign="top"><bold><italic>Clinical features and comorbidity</italic></bold></td>
</tr>
<tr>
<td align="left" valign="top">8.</td>
<td align="left" valign="top">Iyer et al., 2010.<sup><xref ref-type="bibr" rid="B15">15</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">FEP = 149 (India =<break/>61; Canada = 88)</td>
<td align="left" valign="top">&#x2022;Psychopathology<break/>&#x2022;Functional outcomes</td>
<td align="left" valign="top">&#x2022;First-episode patients in the Indian program demonstrated higher rates of improvement at one year in negative symptoms and functioning than patients receiving similar treatment in Canada.<break/>&#x2022;There was no difference in improvement between the sites on positive symptoms and general psychopathology.</td>
</tr>
<tr>
<td align="left" valign="top">9.</td>
<td align="left" valign="top">Hegde et al. 2013.<sup><xref ref-type="bibr" rid="B16">16</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 49</td>
<td align="left" valign="top">&#x2022;Psychopathology<break/>&#x2022;Neuropsychological functioning<break/>&#x2022;WHO Disability assessment schedule</td>
<td align="left" valign="top">&#x2022;Cognitive deficits in multiple domains were observed.<break/>&#x2022;Attention and executive functions predicted global functioning.</td>
</tr>
<tr>
<td align="left" valign="top">10.</td>
<td align="left" valign="top">Gunasekaran et al., 2016.<sup><xref ref-type="bibr" rid="B17">17</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 30</td>
<td align="left" valign="top">&#x2022;Cambridge Neurological Inventory</td>
<td align="left" valign="top">&#x2022;93.3% of patients with FEP had at least one soft neurological sign compared to 16.6% of controls.</td>
</tr>
<tr>
<td align="left" valign="top"/>
<td align="left" valign="top"/>
<td align="left" valign="top"/>
<td align="left" valign="top"/>
<td align="left" valign="top"/>
<td align="left" valign="top"/>
</tr>
<tr>
<td align="left" valign="top">11.</td>
<td align="left" valign="top">Chand et al., 2014.<sup><xref ref-type="bibr" rid="B19">19</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 139</td>
<td align="left" valign="top">&#x2022;Urine toxicology screen<break/>&#x2022;Breath alcohol analysis</td>
<td align="left" valign="top">&#x2022;20% of the population reported current substance use disorder (excluding nicotine).<break/>&#x2022;Current alcohol dependence was diagnosed among 17.3%, whereas cannabis dependence in 3.6%.<break/>&#x2022;Life time as well as current use of cannabis was less than 6%.</td>
</tr>
<tr>
<td align="left" valign="top">12.</td>
<td align="left" valign="top">Saddichha et al., 2008.<sup><xref ref-type="bibr" rid="B20">20</xref></sup></td>
<td align="left" valign="top">Randomized controlled trial</td>
<td align="left" valign="top">FEP = 99</td>
<td align="left" valign="top">&#x2022;Fasting and 2 h post-prandial plasma glucose measurements</td>
<td align="left" valign="top">&#x2022;Male patients with schizophrenia are liable to develop diabetes Mellitus (DM).<break/>&#x2022;Antipsychotic treatment leads to the development of DM in a significant 10.1% within 6 weeks.</td>
</tr>
<tr>
<td align="left" valign="top">13.</td>
<td align="left" valign="top">Saddichha et al., 2007.<sup><xref ref-type="bibr" rid="B22">22</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">&#x2022;FEP = 30 (all females)</td>
<td align="left" valign="top">&#x2022;Lipid/glucose profile<break/>&#x2022;Blood pressure and waist circumference measurement</td>
<td align="left" valign="top">Even the six-week therapy with antipsychotics can cause significant changes in lipid as well as anthropometric measures</td>
</tr>
<tr>
<td align="left" valign="top">14.</td>
<td align="left" valign="top">Saddichha et al., 2007.<sup><xref ref-type="bibr" rid="B21">21</xref></sup></td>
<td align="left" valign="top">Randomized controlled trial</td>
<td align="left" valign="top">FEP = 66</td>
<td align="left" valign="top">&#x2022;Anthropometric measurements</td>
<td align="left" valign="top">&#x2022;Prevalence of overweight (WHO criteria) was 22.7% and obesity was 31.8% (IDF criteria)<break/>&#x2022;Subjects in the olanzapine group had the greatest weight gain at 5.1 kg, followed by risperidone at 4.1 kg and haloperidol at 2.8 kg.</td>
</tr>
<tr>
<td align="left" valign="top">15.</td>
<td align="left" valign="top">Saddichha et al., 2008.<sup><xref ref-type="bibr" rid="B23">23</xref></sup></td>
<td align="left" valign="top">Randomized controlled trial</td>
<td align="left" valign="top">FEP = 99</td>
<td align="left" valign="top">&#x2022;Anthropometric measurements</td>
<td align="left" valign="top">&#x2022;Waist circumference and weight at baseline in addition to the disease process as well as antipsychotic use were associated with greater increases in weight and BMI.</td>
</tr>
<tr>
<td align="left" valign="top">16.</td>
<td align="left" valign="top">Sreedhar et al., 2017.<sup><xref ref-type="bibr" rid="B18">18</xref></sup></td>
<td align="left" valign="top">Retrospective study</td>
<td align="left" valign="top">FEP = 108</td>
<td align="left" valign="top">&#x2022;Clinical variables</td>
<td align="left" valign="top">&#x2022;No gender difference in the 5-year course of Bipolar Disorder (BD), following a first manic episode was observed in the clinical variables</td>
</tr>
<tr>
<td align="left" valign="top"><bold><italic>Course and outcome</italic></bold></td>
</tr>
<tr>
<td align="left" valign="top">17.</td>
<td align="left" valign="top">Chugh et al. 2012.<sup><xref ref-type="bibr" rid="B28">28</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 55</td>
<td align="left" valign="top">&#x2022;WHOQOL-Bref<break/>&#x2022;PANSS</td>
<td align="left" valign="top">&#x2022;Physical well-being as assessed with WHOQOL-Bref is significantly impacted by the positive, negative and general psychopathology symptoms of the disease.</td>
</tr>
<tr>
<td align="left" valign="top">18.</td>
<td align="left" valign="top">Johnson et al. 2013.<sup><xref ref-type="bibr" rid="B29">29</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">FEP = 95</td>
<td align="left" valign="top">&#x2022;Psychopathology<break/>&#x2022;Functioning<break/>&#x2022;Insight<break/>&#x2022;Disability</td>
<td align="left" valign="top">&#x2022;Disability at 5 years was associated with illness variables episodic nature of illness at baseline, psychopathology and functioning, duration in psychotic episode and return to pre-morbid function.</td>
</tr>
<tr>
<td align="left" valign="top">19.</td>
<td align="left" valign="top">Johnson et al. 2014.<sup><xref ref-type="bibr" rid="B30">30</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">FEP = 95</td>
<td align="left" valign="top">&#x2022;Psychopathology<break/>&#x2022;Functioning<break/>&#x2022;Insight</td>
<td align="left" valign="top">&#x2022;A relationship was found between insight, psychosis rating and explanatory models of illness with good insight and medical models associated with good outcome.</td>
</tr>
<tr>
<td align="left" valign="top">20.</td>
<td align="left" valign="top">Shrivastava et al., 2010.<sup><xref ref-type="bibr" rid="B26">26</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">FEP = 101</td>
<td align="left" valign="top">&#x2022;Duration of untreated psychosis<break/>&#x2022;Psychopathology<break/>&#x2022;Functioning</td>
<td align="left" valign="top">&#x2022;Duration of Untreated Psychosis (DUP) was not found to be significantly associated with any of the end point parameters of good clinical or social outcome.</td>
</tr>
<tr>
<td align="left" valign="top">21.</td>
<td align="left" valign="top">Rangaswamy et al., 2012.<sup><xref ref-type="bibr" rid="B32">32</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">FEP = 47</td>
<td align="left" valign="top">&#x2022;Psychopathology<break/>&#x2022;Functioning</td>
<td align="left" valign="top">&#x2022;Significant improvement from baseline to 1st year with maximal improvement seen at 3 months after intake<break/>&#x2022;More women relapsed and more men dropped out.<break/>&#x2022;PANSS scores and GAF at baseline are not predictive of later outcomes.</td>
</tr>
<tr>
<td align="left" valign="top">22.</td>
<td align="left" valign="top">Iyer et al., 2011.<sup><xref ref-type="bibr" rid="B33">33</xref></sup></td>
<td align="left" valign="top">Qualitative study</td>
<td align="left" valign="top">FEP = 68</td>
<td align="left" valign="top">&#x2022;Goal Attainmentsection of the Wisconsin Quality of Life-Client Questionnaire</td>
<td align="left" valign="top">&#x2022;The primary goals identified pertained to work, family/interpersonal relationships, education, symptom relief and psychological recovery, living condition, religion, finances, and household responsibilities.</td>
</tr>
<tr>
<td align="left" valign="top">23.</td>
<td align="left" valign="top">Shrivastava et al., 2011.<sup><xref ref-type="bibr" rid="B27">27</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">FEP = 61</td>
<td align="left" valign="top">&#x2022;Psychopathology<break/>&#x2022;Functioning</td>
<td align="left" valign="top">&#x2022;Not all patients who show clinical recovery have also improved in social functions on socially relevant parameters.<break/>&#x2022;Half of the patients continued to have limitations in the areas of social function</td>
</tr>
<tr>
<td align="left" valign="top">24.</td>
<td align="left" valign="top">Raghavan et al., 2017.<sup><xref ref-type="bibr" rid="B31">31</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">FEP = 51</td>
<td align="left" valign="top">&#x2022;Life skills Profile scale<break/>&#x2022;Functioning</td>
<td align="left" valign="top">&#x2022;Significant improvement was seen in certain domains of social functioning such as communication and non-turbulence while no significant changes were observed in self-care and social contact.</td>
</tr>
<tr>
<td align="left" valign="top"><bold><italic>Caregiver burden</italic></bold></td>
</tr>
<tr>
<td align="left" valign="top">25.</td>
<td align="left" valign="top">Tharoor et al., 2015.<sup><xref ref-type="bibr" rid="B34">34</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">Caregivers of FEP = 40</td>
<td align="left" valign="top">&#x2022;Semi-structured questionnaire to identify the various symptoms cluster recognized by caregivers at illness onset in first episode schizophrenia</td>
<td align="left" valign="top">&#x2022;Depressive, anxious, irritable, and vegetative factor were the early symptom clusters identified by caregivers at illness onset in first episode schizophrenia</td>
</tr>
<tr>
<td align="left" valign="top">26.</td>
<td align="left" valign="top">Sadath et al., 2017.<sup><xref ref-type="bibr" rid="B35">35</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">Caregivers of FEP = 71</td>
<td align="left" valign="top">&#x2022;The family questionnaire<break/>&#x2022;Perceived stress scale<break/>&#x2022;Multidimensional scale of perceived social support</td>
<td align="left" valign="top">&#x2022;Caregivers experienced high level of perceived stress, Expressed Emotion (EE) and poor social support.<break/>&#x2022;Perceived stress significantly increased EE and social support did not significantly influence EE.</td>
</tr>
<tr>
<td align="left" valign="top"><bold><italic>Management</italic></bold></td>
</tr>
<tr>
<td align="left" valign="top">27.</td>
<td align="left" valign="top">Shrivastava et al., 2012.<sup><xref ref-type="bibr" rid="B25">25</xref></sup></td>
<td align="left" valign="top">Follow-up study</td>
<td align="left" valign="top">FEP = 60 (M =30; F = 30)<break/>Controls = 31</td>
<td align="left" valign="top">&#x2022;Serum prolactin levels<break/>&#x2022;BPRS<break/>&#x2022;GAF</td>
<td align="left" valign="top">&#x2022;Prolactin levels in male but not female patients at baseline were twice those of control volunteers<break/>&#x2022;Baseline serum prolactin levels in drugnaive patients with schizophrenia may be used for long-term prognosis but not short-term</td>
</tr>
<tr>
<td align="left" valign="top">28.</td>
<td align="left" valign="top">Sahni et al., 2016.<sup><xref ref-type="bibr" rid="B37">37</xref></sup></td>
<td align="left" valign="top">Randomized controlled trial</td>
<td align="left" valign="top">FEP = 63</td>
<td align="left" valign="top">&#x2022;PANSS<break/>&#x2022;Glasgow Antipsychotic Side-effect Scale</td>
<td align="left" valign="top">&#x2022;Clozapine as a better choice than risperidone in terms of efficacy, tolerability and better quality of life in treatmentnaive, first-episode schizophrenia</td>
</tr>
<tr>
<td align="left" valign="top">29.</td>
<td align="left" valign="top">Hedge et al., 2012.<sup><xref ref-type="bibr" rid="B38">38</xref></sup></td>
<td align="left" valign="top">Randomized controlled trial</td>
<td align="left" valign="top">FEP = 45</td>
<td align="left" valign="top">&#x2022;Psychopathology<break/>&#x2022;Neuropsychological functions<break/>&#x2022;Global functioning</td>
<td align="left" valign="top">&#x2022;Addition of home-based cognitive retraining along with Treatment as Usual (TAU) led to significant improvement in neuropsychological functions of divided attention, concept formation and setshifting ability, and planning.</td>
</tr>
<tr>
<td align="left" valign="top">30.</td>
<td align="left" valign="top">Shrivastava et al., 2012.<sup><xref ref-type="bibr" rid="B36">36</xref></sup></td>
<td align="left" valign="top">Cross-sectional study</td>
<td align="left" valign="top">FEP = 116</td>
<td align="left" valign="top">&#x2022;Assessment of medication adherence by predetermined cut-off value</td>
<td align="left" valign="top">&#x2022;In long term, FEP use prescribed atypical antipsychotics within the recommended limits.<break/>&#x2022;Chlorpromazine equivalence dosages do not differ across antipsychotic medications</td>
</tr>
<tr>
<td align="left" valign="top">31.</td>
<td align="left" valign="top">Morgan et al., 2015.<sup><xref ref-type="bibr" rid="B40">40</xref></sup></td>
<td align="left" valign="top">Mixed methods study</td>
<td align="left" valign="top"/>
<td align="left" valign="top">&#x2022;Structure of mental health systems in three catchments areas, namely Chengalpet, Ibadan and Trinidad.</td>
<td align="left" valign="top">&#x2022;Marked differences in mental health systems in each catchment areas<break/>&#x2022;Highlights the necessity of developing tailored systems for the detection of representative samples of cases with untreated and first-episode psychosis as a basis for robust, comparative epidemiological studies.</td>
</tr>
</tbody>
</table>
</table-wrap>
<sec>
<title>Epidemiology</title>
<p>No large-scale community based epidemiological studies have examined the incidence and prevalence of first episode psychosis in India. In a large multi-national, multi-centric collaborative study done in developing and developed countries, nearly 50% of the individuals with first-episode psychosis were in the age group of 15-24 years. There was a preponderance of males in the younger age group and of females in the older age group. Majority showed no family history with acute onset.<sup><xref ref-type="bibr" rid="B8">8</xref></sup></p>
</sec>
<sec>
<title>Etiology/ Pathophysiology</title>
<p>Few studies have examined the pathophysiological basis of first episode psychosis from India. Using fluorine-18 fluorodeoxyglucose (FDG) positron emission tomography (PET), a study examined the correlation between the facial emotional perception task and brain functioning in individuals with first-episode psychosis and found brain regions (bilateral prefrontal cortices and fusiform gyri) implicated in emotion processing showed hypo-metabolism in FEP as compared to controls.<sup><xref ref-type="bibr" rid="B9">9</xref></sup> Similarly, drug-na&#x00EF;ve first-episode psychosis individuals had smaller global grey matter and increased cerebrospinal fluid (CSF) volumes along with other regional grey matter volume reductions.<sup><xref ref-type="bibr" rid="B10">10</xref></sup></p>
<p>While the plasma essential polyunsaturated fatty acids (EPUFAs) levels were found to be comparable between drug-na&#x00EF;ve first-episode psychosis and normal controls, docosahexaenoic acid (DHA), which is enriched in the brain, was found to be lower in red blood cells (RBCs) and higher in cerebrospinal fluid (CSF).<sup><xref ref-type="bibr" rid="B11">11</xref></sup> Similarly, plasma showed low levels of folate and B12 with increased homocysteine and cortisol levels in individuals with first-episode psychosis.<sup><xref ref-type="bibr" rid="B12">12</xref></sup> In a study conducted in individuals with first episode mania, negative correlation and inverse linear relationship were noted between total cholesterol (TC), triglycerides (TG), very low density lipoproteins (VLDL) and body mass index (BMI) with attentional/cognitive impulsivity.<sup><xref ref-type="bibr" rid="B13">13</xref></sup></p>
<p>In a qualitative study, the explanatory models of psychosis were explored in individuals with first-episode psychosis. Nearly 70% had spiritual and mystical factors as the cause of their illness while 22% held multiple models of illness. Female sex, low education and visits to traditional healers were found to be associated with spiritual and mystic models of illness and likely to be having less insight.<sup><xref ref-type="bibr" rid="B14">14</xref></sup></p>
</sec>
<sec>
<title>Clinical features and comorbidity</title>
<p>In a comparative study between India and Canada, Indian subjects showed higher rates of improvement at one year in negative symptoms and functioning than patients receiving similar treatment in Canada but no differences were observed in positive and general psychopathology symptoms.<sup><xref ref-type="bibr" rid="B15">15</xref></sup> A study that examined the cognitive deficits in first-episode psyc<sup>iii</sup>hosis found that nearly 2/3<sup>rd</sup> of the sample had more than 25% of cognitive deficits and negative symptoms significantly correlated with cognitive functions of motor speed, attention and executive functions.<sup><xref ref-type="bibr" rid="B16">16</xref></sup> In a study by Sreedhar et al., no gender differences were observed in the clinical presentation of first episode mania and the 5-year course of bipolar disorder following a first episode mania.<sup><xref ref-type="bibr" rid="B17">17</xref></sup></p>
<p>There is a significantly higher incidence of soft neurological signs in patients with first-episode psychosis (93.3%) when compared with normal controls (16.6%). Also, the presence of soft signs correlated with the severity of psychosis.<sup><xref ref-type="bibr" rid="B18">18</xref></sup></p>
<p>In a study from Bangalore, the prevalence of substance use in individuals with first-episode psychosis was examined by self-report questionnaire, urine toxicity screen and alcohol breath analysis. Here, current alcohol dependence was found to be 17.3% while cannabis dependence was 3.6%.<sup><xref ref-type="bibr" rid="B19">19</xref></sup> When compared with western countries such as UK, Canada and USA, the prevalence of substance use in Indian urban setting is substantially less among individuals with first-episode psychosis.</p>
<p>Individuals with drug-na&#x00EF;ve first-episode psychosis were found to have significantly higher 2 h postprandial blood sugar (PPBS) levels when compared with normal controls indicating they are inherently susceptible to develop diabetes mellitus.<sup><xref ref-type="bibr" rid="B20">20</xref></sup> In a similar study, women with first-episode psychosis were serially followed-up for six weeks and found to have significant abnormalities in lipid profile and anthropometric measures.<sup><xref ref-type="bibr" rid="B21">21</xref></sup></p>
<p>There is high prevalence of overweight at 22.7% and obesity at 31.8% in individuals with first-episode psychosis treated with atypical antipsychotic drugs with highest risk for individuals treated with olanzapine.<sup><xref ref-type="bibr" rid="B22">22</xref></sup> Similarly, prevalence of metabolic syndrome (MetS) was 10.1% which is five times higher than the normal control group. Moreover, Olanzapine had maximum prevalence of MetS at 20-25% followed by risperidone at 9-24% and haloperidol at 0-3%.<sup><xref ref-type="bibr" rid="B23">23</xref></sup> Predictors of antipsychotic-induced weight gain were waist circumference and weight at baseline, disease process and antipsychotic use especially olanzapine (77%).<sup><xref ref-type="bibr" rid="B24">24</xref></sup></p>
</sec>
<sec>
<title>Course and outcome</title>
<p>Serum prolactin levels at baseline were found to predict long-term (5 years) outcome in individuals with first-episode psychosis.<sup><xref ref-type="bibr" rid="B25">25</xref></sup> In this longitudinal naturalistic follow-up study, individuals with FEP who were hospitalised were selected and followed up for 10 years. The results showed that the DUP was not significantly associated with any of the end-point variables indicative of good clinical and social outcomes. This study hinted that DUP alone does not determine the outcome in FEP with multiple other factors playing important roles.<sup><xref ref-type="bibr" rid="B26">26</xref></sup> Also, individuals with good clinical outcome were assessed for social recovery. 52.5% of patients showed good social recovery while the others showed variable social recovery highlighting the discordance between the clinical and social outcomes in first-episode psychosis.<sup><xref ref-type="bibr" rid="B27">27</xref></sup></p>
<p>In a follow-up study of 6 months, the different facets of quality of life (QOL) was strongly associated with the general psychopathology symptoms measured in Positive and Negative Symptoms Scale (PANSS) and negative symptoms have a greater influence on the subjective QOL than the positive symptoms.<sup><xref ref-type="bibr" rid="B28">28</xref></sup></p>
<p>In a study by Johnson et al., at the end of 5-years, disability in first-episode psychosis was found to be associated with episodic nature of illness at baseline, psychopathology and functioning, duration in psychotic episode and return to pre-morbid functioning.<sup><xref ref-type="bibr" rid="B29">29</xref></sup> Similarly, the same author had examined the predictors of insight in first-episode psychosis. In this 5-year follow-up, re<sup>iv</sup>sults suggested a relationship between the insight, psychosis ratings and explanatory models of illness indicating that the insight and explanatory models of illness are secondary to psychopathology, course and outcome. Moreover, early improvement in insight was found to be a useful clinical guide to predict future outcomes in first-episode psychosis.<sup><xref ref-type="bibr" rid="B30">30</xref></sup></p>
<p>Individuals with first-episode psychosis were found to have only partial improvement in social functioning at the end of one year treatment with better improvements in communication and non-turbulence while no significant changes observed in self-care and social contact.<sup><xref ref-type="bibr" rid="B31">31</xref></sup> In individuals with first-episode psychosis who had attained remission, 50% attained maximum improvement within the first three months of treatment while 30% at 1 year, and the remaining 20% at 2 years. Moreover, 25 out of 28 individuals with shorter duration of untreated psychosis (&lt; 2 years) were found to be in remission at the end of 2-year follow-up while only 3 out of 10 individuals were in remission when their duration of untreated psychosis was more than two years.<sup><xref ref-type="bibr" rid="B32">32</xref></sup></p>
<p>Interestingly, when patient identified goals of treatment were explored in FEP, the following were the primary goals: work, family/interpersonal relationships, education, symptom relief and psychological recovery, living condition, religion, finances, and household responsibilities.<sup><xref ref-type="bibr" rid="B33">33</xref></sup></p>
</sec>
<sec>
<title>Caregiver burden</title>
<p>Few studies have examined the first episode psychosis from the caregivers&#x2019; perspective. In one study by Tharoor and colleagues, the various symptom clusters recognised by the caregivers at the illness onset of FEP were examined. Using Principal Component (PCP) analysis, it was identified that four factors were easily recognised by the caregivers namely, depressive, anxious, irritable, and vegetative factor.<sup><xref ref-type="bibr" rid="B34">34</xref></sup> Another study examined the expressed emotion in caregivers of individuals with first-episode psychosis shaped by stress and social support to them. The results indicated that caregivers experienced high level of perceived stress, expressed emotion and poor social support.<sup><xref ref-type="bibr" rid="B35">35</xref></sup></p>
</sec>
<sec>
<title>Management</title>
<p>Many individuals with first-episode psychosis showed high compliance with medications and nearly 77% of them were prescribed atypical antipsychotics. The clinical and functional outcomes in different atypical antipsychotic groups were also comparable.<sup><xref ref-type="bibr" rid="B36">36</xref></sup></p>
<p>In comparative, open-label, six-months prospective study of drug-na&#x00EF;ve first-episode psychosis, clozapine was found to be a better in terms of efficacy, tolerability and better quality of life when compared with risperidone.<sup><xref ref-type="bibr" rid="B37">37</xref></sup></p>
<p>In an intervention study, 2-month-long home-based cognitive retraining program together with treatment as usual (TAU; psychoeducation and drug therapy) was found leading towards a significant improvement in neuropsychological functioning when compared with controls (TAU).<sup><xref ref-type="bibr" rid="B38">38</xref></sup></p>
<p>Introduction of a round-the-clock crisis helpline for suicide prevention had been effective in the identification of individuals with first-episode psychosis. These individuals were found to have a shorter duration of untreated psychosis (DUP) and fewer suicide attempts.<sup><xref ref-type="bibr" rid="B39">39</xref></sup></p>
<p>Marked differences in the mental health system in the western countries when compared with developing countries like India had made it difficult to translate the findings for practical applications. This had illustrated the need for the development of tailored mental health system applicable to the Indian context for the early detection and management of first-episode psychosis.<sup><xref ref-type="bibr" rid="B40">40</xref></sup></p>
</sec>
</sec>
<sec sec-type="discussion">
<title>DISCUSSION</title>
<p>The aim of the current study was to comprehensively summarise the scientific literature available on firstepisode psychosis from the Indian subcontinent. These studies from India have explored the varied dimensions of FEP from neurobiological underpinnings of the disorder to social and cultural factors playing a role in the treatment outcomes. Even though the research output on FEP is less when compared with the western world, the results from these studies have given significant insights applicable specifically for our population. For example, a comparative study by SCARF among individuals with FEP from India and Canada has shown certain similarities and significant differences existing between the study population and various social and cultural factors have been found to play an interactive role in this respect.</p>
<p>Previous research has shown that there is a significant delay between the onset of psychotic symptoms and the commencement of treatment. It may take up to 2 years for individuals to begin to receive the interventions needed to alleviate psychotic symptoms.<sup><xref ref-type="bibr" rid="B41">41</xref></sup> Similar results are also found in studies from India <sup><xref ref-type="bibr" rid="B15">15</xref>,<xref ref-type="bibr" rid="B31">31</xref></sup>. This delay could be twofold in nature, with delays occurring due to individuals not seeking help, and scarcity of mental health professionals in India.</p>
<p>Individuals often do not seek treatment as they do not understand the nature of their psychotic symptoms, especially in the prodromal phase.<sup><xref ref-type="bibr" rid="B42">42</xref></sup> Delays in seeking assistance can also be due to fear of stigmatisation, psychological factors such as denial, and lack of support or motivation.<sup><xref ref-type="bibr" rid="B43">43</xref>,<xref ref-type="bibr" rid="B44">44</xref></sup> Moreover, in India, the common prevalence of religious explanatory models for the causation of psychosis in the general population against biomedical models play a significant role for this delay. This has led to the process of people with FEP accessing the care from the magico-religious centers first and then seeking help from the mental health professionals.<sup><xref ref-type="bibr" rid="B14">14</xref></sup> This causes a significant delay in the initiation of proper treatment. Lack of access to relevant services may also impair an individual&#x2019;s ability to access treatment. Individuals in rural areas face greater barriers to treatment, with less psychiatry services available, poorer socioeconomic status, and generally a lack of critical mass of patients in these areas.<sup><xref ref-type="bibr" rid="B3">3</xref></sup></p>
<p>Most of the longitudinal follow-up studies from this review have highlighted the importance of early interventions in FEP as it leads to better treatment outcomes and functioning in the long term. There is considerable debate in the literature as to whether early intervention leads to better clinical outcomes in individuals with FEP. Some studies show no difference in outcomes for patients with longer or shorter duration of untreated psychosis (DUP).<sup><xref ref-type="bibr" rid="B45">45</xref></sup> Similar finding was also found in a study from India which has shown that there is no relationship between DUP and functional outcome in individuals with FEP.<sup><xref ref-type="bibr" rid="B26">26</xref></sup> Others, however, show a longer course of illness w<sup>v</sup>ith more severe symptoms in those individuals with longer DUP. Shiers et al.,<sup><xref ref-type="bibr" rid="B41">41</xref></sup> argue that the early stage of psychotic illness is a crucial time for intervention, with outcomes at 2 years after symptom onset predictive of illness severity 15 years later. Even though no such long-term follow-up studies are there from India, the trends from the existing literature points towards this direction. Moreover, Berger et al.,<sup><xref ref-type="bibr" rid="B46">46</xref></sup> state that early intervention is imperative, as functional and structural brain changes seen in schizophrenia may actually occur at the onset of psychotic symptoms. Research suggests that deterioration is most rapid in the 2&#x2013;3 years after onset of psychotic illness, so early intervention may halt this decline.<sup><xref ref-type="bibr" rid="B3">3</xref></sup></p>
<p>Even though the debate remains, early intervention is essential when we look at the psychological impact on both patient and their family as discussed earlier.<sup><xref ref-type="bibr" rid="B43">43</xref></sup> Delays in treatment prolong anxiety and distress for patients and their families, and can lead to an increased risk of relapse.<sup><xref ref-type="bibr" rid="B47">47</xref></sup> Importantly, it is vital to alleviate psychotic symptoms as it is known that they increase the risk of suicide and suicidal behavior.<sup><xref ref-type="bibr" rid="B48">48</xref></sup></p>
<p>In order to facilitate early intervention, education related to early detection needs to be given to both healthcare professionals and the community.<sup><xref ref-type="bibr" rid="B7">7</xref></sup> GPs, nurses, and other health-care workers need to be educated as to the early identification of psychotic symptoms and their assessment, and then be encouraged to either begin treatment or refer patients to appropriate specialist services.<sup><xref ref-type="bibr" rid="B46">46</xref></sup></p>
<p>Second, community stakeholders and carers of young people also need to be aware of early symptoms. Teachers, counsellors, the police, and others who may have ongoing contact with youth in the community need to be taught about the symptoms of psychosis, be encouraged to seek help for young people of whom they are concerned, and be shown where that help may be found.<sup><xref ref-type="bibr" rid="B44">44</xref>,<xref ref-type="bibr" rid="B49">49</xref></sup> Individuals themselves also need to be supported to change their help-seeking behaviour, with information and access to services being readily available.<sup><xref ref-type="bibr" rid="B43">43</xref></sup></p>
<p>In order to combat the barriers to early treatment, a number of early intervention services have emerged.<sup><xref ref-type="bibr" rid="B50">50</xref></sup> In Victoria, Australia, for example, the Early Psychosis Prevention and Intervention Centre (EPPIC) has a mobile assessment team which takes referrals from GPs, the police, and concerned relatives and friends to respond in a timely manner when individuals display potentially psychotic symptoms.<sup><xref ref-type="bibr" rid="B51">51</xref></sup> The EPPIC is part of Orygen Youth Health which targets youth aged 13&#x2013;25 years, attempting to bridge the gap between child and adult mental health services.<sup><xref ref-type="bibr" rid="B52">52</xref></sup></p>
</sec>
<sec sec-type="conclusions">
<title>CONCLUSION</title>
<p>This review analyzed the research conducted on first episode psychosis in India. When compared other parts of the world, the research output from India in firstepisode psychosis is less but steadily on the rise in the recent times. Given the importance of first episode psychosis and its early identification and treatment for better outcomes, the need of the hour is the dedicated research focus on first episode psychosis to understand the disorder in the Indian context and to develop strategies to manage within the framewor<sup>vi</sup>k of available facilities in India.</p>
</sec>
</body>
<back>
<ack>
<title>ACKNOWLEDGEMENTS</title>
<p>Post-Doctoral support is by the Fogarty International Training Program in Chronic Non-Communicable Diseases and Disorders at the University of Florida, Grant # 1D43TW009120 (L. Cottler, PI) (VR).</p>
</ack>
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