A detailed study and analysis of several hundred cases of motor urge incontinence in the female is presented and summarized. This includes the incidence, the history referring to a questionnaire with a new urge and stress score, the symptomatology, possible etiological factors, the cystometric manifestation and the responsiveness to several treatment modalities and medications. A comparison of flavoxate, emepronium, propantheline and a placebo for the treatment of urinary incontinence due to bladder instability is made, the results are discussed and recommendations are made.