[Tap water iontophoresis in the treatment of hyperhidrosis of the hands and feet].

Seven patients with hyperhidrosis of the palms or soles resistant to topical application of aluminum chloride solution were treated successfully with tap water iontophoresis. After an average of 10 or 11 treatments 80% sweating suppression was found on palms and 74% suppression on soles. As side effects of treatment discomfort and transient skin irritation were observed depending on the amperage used. The effect lasts up to several weeks; however, maintenance treatment on an individual schedule is required.