According to DSM-5 criteria, what is the minimum number of symptoms required to diagnose Attention-Deficit/Hyperactivity Disorder in a child aged 6–11 years, and from which domains must they be present?

Explanation

## DSM-5 Diagnostic Criteria for ADHD in Children (6–11 years) ### Symptom Threshold **Key Point:** According to DSM-5, a minimum of **six or more symptoms** must be present from **either** the inattention domain **or** the hyperactivity-impulsivity domain — they do **not** need to come from both domains simultaneously. ### Two-Domain Structure | Domain | Key Symptoms | Minimum for Diagnosis | |--------|--------------|----------------------| | **Inattention** | Difficulty sustaining attention, careless mistakes, forgetfulness, difficulty organizing, easily distracted, loses things, avoids sustained mental effort | ≥6 symptoms (in children) | | **Hyperactivity-Impulsivity** | Fidgets, leaves seat, runs/climbs excessively, difficulty engaging in quiet activities, "on the go," talks excessively, blurts answers, difficulty waiting turn, interrupts | ≥6 symptoms (in children) | ### ADHD Presentations Under DSM-5 - **Predominantly Inattentive Presentation:** ≥6 inattention symptoms, <6 hyperactivity-impulsivity symptoms - **Predominantly Hyperactive-Impulsive Presentation:** ≥6 hyperactivity-impulsivity symptoms, <6 inattention symptoms - **Combined Presentation:** ≥6 symptoms from **both** domains ### Critical Diagnostic Features - **Age of onset:** Symptoms must be present before age 12 years. - **Duration:** Symptoms must persist for ≥6 months, inconsistent with developmental level. - **Functional impairment:** Clear evidence of impairment in ≥2 settings (home, school, social). - **Exclusion:** Symptoms are not better explained by another mental disorder, medical condition, or substance use. ### Age-Specific Thresholds - **Children (6–11 years):** ≥6 symptoms from either or both domains - **Adolescents/Adults (≥17 years):** ≥5 symptoms (lower threshold due to developmental maturation) **High-Yield (DSM-5, American Psychiatric Association):** Option A is incorrect because DSM-5 does **not** require a minimum of three symptoms from each domain — six symptoms from a single domain is sufficient for diagnosis. Option C correctly captures the DSM-5 rule: six or more symptoms from **either** the inattention **or** the hyperactivity-impulsivity domain (not necessarily both). **Clinical Pearl:** The predominantly inattentive presentation is frequently missed in girls and older children because hyperactivity is absent, yet the DSM-5 threshold of ≥6 inattention symptoms alone is sufficient for diagnosis.