Cannabis use disorder
DSM-5 cannabis use disorder is diagnosed when cannabis use causes meaningful problems across at least two of eleven domains — tolerance, withdrawal, unsuccessful quit attempts, time spent obtaining or using, role failures, and continued use despite consequences. Severity ranges from mild (2–3 criteria) to severe (6 or more). The clinical reality has shifted significantly in the past decade: today's daily user is often consuming cannabis many times more potent than a decade ago, frequently via concentrates that produce both faster tolerance and harder withdrawal. We treat the full severity spectrum.