Delirium tremens typically begins within how many hours after the last drink?

• A. 24-48 hours
• B. 48-96 hours
• C. 72-120 hours
• D. 12-24 hours

Answer: (B)

Delirium tremens tends to appear in the second to third day after alcohol cessation, with a typical onset in the range of about two to four days. This makes the window around 48 to 96 hours after the last drink the best fit, because most patients begin showing DT symptoms within that period and some may extend to around day four.

Why this window fits best: DTs are a severe withdrawal syndrome that doesn’t usually start immediately. Starting as early as 12–24 hours is more characteristic of mild to moderate withdrawal symptoms, while approaching 72–120 hours misses many cases that begin earlier and still fits but is less precise for the common range. The 48–96 hour span captures the common onset around 48–72 hours and accounts for variability up to about 96 hours.

Clinically, recognizing this timing helps guide monitoring intensity and treatment planning, since DTs require prompt management, typically with benzodiazepines and supportive care.