After 25 years of wearing a condom catheter, recurrent blisters and ep
idermal sloughing of the penile shaft developed in a patient. Patch te
sting revealed hypersensitivities to several allergenic components of
the condom catheter (that is thiram and mercaptobenzothiazole). After
immediate treatment with topically applied steroids, the condition imp
roved and the patient successfully switched to a silicone condom witho
ut further irritation.