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Personality Disorders and Psychopathology · Journal article
Journal of Clinical and Diagnostic Research · July 16, 2026
Early or partial results. Treat as a signal, not a conclusion.
This case report describes a 25-year-old male with schizotypal personality disorder initially misdiagnosed with social anxiety disorder and obsessive-compulsive features, subsequently treated with psychotherapy and pharmacotherapy after comprehensive longitudinal evaluation. The report illustrates diagnostic challenges and the value of detailed longitudinal assessment but provides no data on treatment outcomes, response rates, or comparative effectiveness.
Case report. One 25-year-old male with schizotypal personality disorder; initial presentation with social anxiety and ritualistic behaviours.. Intervention: Psychotherapy and pharmacotherapy following revision of diagnosis to schizotypal personality disorder.
Patient initially misdiagnosed with social anxiety disorder with obsessive-compulsive features, subsequently considered for depression and psychosis diagnoses before final SPD diagnosis Comprehensive evaluation revealed enduring pattern of eccentric behaviour, persistent odd beliefs, impaired interpersonal functioning, constricted affect, transient stress-related suspiciousness, and poor treatment adherence Patient responded poorly to treatment despite multiple medication trials and inpatient care prior to SPD diagnosis
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This case illustrates that schizotypal personality disorder is frequently misdiagnosed as anxiety disorder, obsessive-compulsive disorder, or early psychosis, and that longitudinal assessment incorporating developmental history and symptom trajectory is necessary for accurate diagnosis. Clinicians should consider SPD in patients with persistent social dysfunction and eccentric features who fail to respond to targeted treatment for other diagnoses.
A single case report with retrospective diagnostic revision; demonstrates clinical reasoning about diagnostic challenges but provides no comparative data, control group, or systematic outcome measurement to support generalizable evidence.
As stated by the source record.
Quoted from the source exactly as published.
This case illustrates that schizotypal personality disorder is frequently misdiagnosed as anxiety disorder, obsessive-compulsive disorder, or early psychosis, and that longitudinal assessment incorporating developmental history and symptom trajectory is necessary for accurate diagnosis. Clinicians should consider SPD in patients with persistent social dysfunction and eccentric features who fail to respond to targeted treatment for other diagnoses.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Schizotypal Personality Disorder (SPD) is characterised by pervasive social and interpersonal deficits, cognitive–perceptual distortions, and eccentric behaviour, and is frequently misdiagnosed due to symptom overlap with schizophrenia, anxiety, and obsessive-compulsive symptoms. It occupies a distinct position across diagnostic systems, being placed within schizophrenia spectrum disorders in the International Classification of Diseases, 11th Revision (ICD-11), while the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) classifies it under Cluster A personality disorders. This case describes a 25-yearold male who initially presented with social anxiety and ritualistic behaviours and was diagnosed with social anxiety disorder with obsessive-compulsive features. In subsequent visits, additional diagnoses of depression and psychosis were considered based on the evolving symptom profile. He responded poorly to treatment despite multiple trials of medications and inpatient care. On his fourth admission, a comprehensive evaluation with diagnostic psychometry was undertaken, incorporating birth and developmental history and thorough tracking of the longitudinal course of symptoms, which revealed an enduring pattern of eccentric behaviour, persistent odd beliefs, impaired interpersonal functioning, constricted affect, transient stress-related suspiciousness, and poor treatment adherence, leading to significant occupational and social impairment. The diagnosis was revised to SPD, and he was treated with psychotherapy and pharmacotherapy. The case highlights the importance of a Kraepelinian longitudinal approach to evaluation in psychiatry, which is often neglected in contemporary practice.
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