Most common symptoms
Headache
Fatigue
Decreased energy/activeness
Decreased alertness
Drowsiness
Decreased contentedness
Depressed mood
Difficulty concentrating, irritability, and foggy/not clearheaded
Additional symptoms
Flu-like symptoms
Nausea/vomiting
Muscle pain/stiffness
Headache
Fatigue
Decreased energy/activeness
Decreased alertness
Drowsiness
Decreased contentedness
Depressed mood
Difficulty concentrating, irritability, and foggy/not clearheaded
Flu-like symptoms
Nausea/vomiting
Muscle pain/stiffness
Caffeine withdrawal
Migraine headache
Barbiturate withdrawal
Tension headache
Cocaine withdrawal
Cluster headache
Benzodiazepine withdrawal
Meningitis/encephalitis