[Myoclonic encephalopathy caused by bismuth salts. Efficacy of treatment with dimercaprol].

Three patients with myoclonic encephalopathy caused by bismuth salts are reported, one with the severe and another with the mild form; dimercaprol was effective for the rapid improvement of the symptoms in both. In one of the patients in whom the clearance of bismuth was calculated it was found to be increased after dimercaprol therapy. We think that dimercaprol is an effective drug for the therapy of myoclonic encephalopathy caused by bismuth salts.