Name a common co-occurring disorder with SUD.

• A. Depression (major depressive disorder) or anxiety disorder.
• B. Schizophrenia.
• C. Bipolar disorder.
• D. ADHD.

Answer: (D)

Co-occurring disorders with substance use disorders are common, and recognizing them is essential for effective treatment. ADHD often appears as a co-occurring condition with SUD because its core features—impulsivity, trouble with self-regulation, and difficulty sustaining attention—can lead to experimenting with substances as a way to cope or seek stimulation. This impulsivity and reward-seeking behavior increases risk for early and ongoing substance use, and the same underlying brain function differences that contribute to ADHD can heighten vulnerability to developing SUD. In practice, this means that when working with someone with SUD, screening for ADHD and, if present, integrating ADHD-focused strategies into treatment can improve outcomes. Be mindful that mood and anxiety disorders also commonly occur with SUD, but ADHD is frequently highlighted as a common co-occurring condition due to its impact on behavior, treatment engagement, and relapse risk.