[Ephedrine psychosis]

Abstract

Ephedrine has both alpha- and beta-adrenergic activity, and both direct and indirect effects on receptors. Its stimulatory effects on the central nervous system are more prolonged, though less potent, than those of adrenalin. It raises blood pressure both by increasing cardiac output and inducing peripheral vasoconstriction. It is still commonly used as a bronchodilator. However, since prolonged use leads to decreased effectiveness, patients tend to increase the dose themselves. The clinical picture of ephedrine psychosis resembles that induced by amphetamines: primarily a paranoid psychosis with delusions of persecution and auditory and visual hallucinations in a setting of unclouded consciousness. We present a 57-year-old woman who had been taking a usual dose of ephedrine for bronchial asthma (50 mg 3 times a day) for more than 30 years. When her husband died she developed depression, for which she tried to use ephedrine as an antidepressive, increasing the dose to 500 to 1000 mg a day over the course of half a year. She developed paranoid psychosis with delusions of persecution and auditory hallucinations, despite a clear sensorium. Recovery was rapid after ephedrine was gradually reduced to 200 mg a day and a small dose (200 mg) of the neuroleptic thioridazine was added.