<unk>  <unk> , sometimes called Call-Fleming syndrome) is a disease characterized by a weeks-long course of thunderclap headaches, sometimes focal neurologic signs, and occasionally seizures. Symptoms are thought to arise from transient abnormalities in the blood vessels of the brain. In some cases, it may be associated with childbirth, vasoactive or illicit drug use, or complications of pregnancy.
For the vast majority of patients, all symptoms disappear on their own within three weeks. Deficits persist in a small minority of patients, with severe complications or death being very rare. Because symptoms resemble a variety of life-threatening conditions, differential diagnosis is necessary.
Reversible cerebral vasoconstriction syndrome
Cholesterol emboli syndrome
Brain fag syndrome
Septic embolism
Serotonin syndrome
Cerebral vasculitis
Cascade reaction
Decompression sickness