## Diagnostic Criteria and Epidemiology of Specific Phobias ### DSM-5 Diagnostic Criteria **Key Point:** Specific phobia is characterized by marked, persistent, and excessive fear of a specific object or situation, with avoidance or intense distress, lasting ≥6 months and causing clinically significant impairment. | Criterion | Requirement | | --- | --- | | Fear Response | Immediate and intense when exposed to phobic stimulus | | Avoidance | Patient actively avoids the object/situation or endures with severe anxiety | | Duration | ≥6 months (DSM-5 requirement) | | Functional Impairment | Significant distress or occupational/social/educational dysfunction | | Exclusion | Not better explained by another mental disorder | ### Epidemiology: Gender Differences **High-Yield:** Specific phobias show a **marked female predominance**, not equal prevalence. - **Lifetime Prevalence:** ~7–9% in the general population - **Female-to-Male Ratio:** Approximately **2:1** (females are twice as likely to develop specific phobias) - **Age of Onset:** Typically childhood to early adolescence (mean ~10–13 years) - **Most Common Types:** Animal phobias (dogs, spiders), natural environment (heights, storms), situational (flying, enclosed spaces), blood-injection-injury **Clinical Pearl:** The female predominance is thought to reflect both biological factors (e.g., genetic predisposition, hormonal influences) and social learning/modeling effects. ### Why This Matters on Exams **Mnemonic:** **FEAR-6** (Specific Phobia Criteria) - **F**ear: Immediate, intense, excessive - **E**xposure: Triggers the anxiety response - **A**voidance: Active or endured with distress - **R**ecognition: Patient recognizes fear is excessive (insight) - **6**: 6 months minimum duration; significant functional impairment **Warning:** Do NOT confuse specific phobia with agoraphobia (which involves multiple situations) or social anxiety disorder (which involves fear of social evaluation, not the object itself).
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