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Updated: Jul 2, 2025

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Late-Onset Obsessive-Compulsive Disorder Comprising Somatic Obsessions: Is This a Distinct and Overlooked Phenotypic

Joana Regala1,2, João Reis1

  • 1Department of Geriatric Psychiatry, Centro Hospitalar Psiquiátrico de Lisboa, Lisbon, Portugal.

The Primary Care Companion for CNS Disorders
|February 23, 2024
PubMed
Abstract

No abstract available in PubMed .

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A persistent pattern of angry or irritable mood, defiant behavior, or vindictiveness characterizes Oppositional Defiant Disorder (ODD). Symptoms must occur over at least six months, involve interactions with individuals beyond siblings, and meet specific diagnostic criteria to be clinically significant. The disorder affects emotional regulation, social interactions, and behavior, often manifesting early in life and influencing long-term development and functioning.
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Personality disorders represent enduring cognition, affect, and behavior patterns that significantly deviate from societal norms. These maladaptive traits often lead to difficulties in various domains, including interpersonal relationships, occupational settings, and overall psychological well-being. Paranoid personality disorder and schizoid personality disorder are two distinct conditions marked by odd or eccentric behavior.
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The Diagnostic and Statistical Manual of Mental Disorders (DSM) serves as the primary classification system for mental health disorders, providing standardized diagnostic criteria for clinicians and researchers. First published by the American Psychiatric Association (APA) in 1952, the DSM has undergone several revisions to reflect evolving psychiatric understanding. The fifth edition, DSM-5, released in 2013, introduced key updates that expanded diagnostic categories and modified diagnostic...
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