Twenty-seven women with symptoms of frequency, urgency and urge incontinence were assessed urodynamically. Their detrusor behaviour fell into 3 groups: (1) reduced detrusor compliance, (2) uninhibited detrusor contractions, and (3) detrusor stability. Each patient was treated by Frewen's regime of bladder drill, detrusor inhibitory drugs, sedation and simple psychological counselling. At 3 months symptoms were markedly improved or cured in 86% of patients. Reduced compliance was the only detrusor abnormality which was reversible.