['Steroid psychosis' during treatment for premature labour].

A 30-year-old woman, 33 weeks pregnant, without a significant psychiatric history, was admitted for treatment of premature labour. She was treated with betamethasone intramuscularly, with a total dose of 24 mg divided over 2 days, and nifedipine orally with beneficial effect on the contractions. However, within 24 h after completion of tocolytic treatment, she developed a psychosis with delusions and hallucinations necessitating readmission, first to an obstetric ward, later to a psychiatric ward.