Aquagenic urticaria.
A 30-year-old woman with aquagenic urticaria developed hives every time she came in contact with a water source such as tap water, snow or sweat. The patient's condition was satisfactorily controlled with cyproheptadine hydrochloride. I believe the triggering event in these attacks may have been an osmotic stimulus.
D000328:Adult; D003533:Cyproheptadine / Q000627:therapeutic use; D005260:Female; D006801:Humans; D009997:Osmotic Pressure; D014581:Urticaria / Q000188:drug therapy / Q000209:etiology*; D014867:Water
D014867:Water; D003533:Cyproheptadine