We present 9 patients with contact urticaria due to rubber gloves. Others have reported an increasing incidence of the disease among females, patients with atopic dermatitis, and hospital personnel. Our data confirm these results. Scarification with water, in which the suspected glove was incubated, is a simple diagnostic method, both reliable and cheap, in order to test the solubility of the allergen(s) in water. In one of our patients, we proved a type-I allergy caused by tetramethyl thiuram disulfide.