Rule out more serious etiologies
Timing
Onset 12–24 h after abstinence
Peak intensity at 20–51 h
Duration of 2–9 days
Onset 12–24 h after abstinence
Peak intensity at 20–51 h
Duration of 2–9 days
Caffeine withdrawal
Migraine headache
Barbiturate withdrawal
Tension headache
Cocaine withdrawal
Cluster headache
Benzodiazepine withdrawal
Meningitis/encephalitis