What causes blisters on the penis?

Sep 14, 2022 Source: Cainiu Health
Disease description:

Last night, when I was changing my underwear, I noticed blisters on my penis, accompanied by occasional mild pain. What could cause blisters to appear on the penis?

Doctor's answer (1)
Dr. Liu Wan
Blisters on the penis may be caused by eczema or could result from an allergic reaction. Genital herpes can also sometimes cause blistering on the penis. Patients should promptly go to the hospital for a comprehensive examination and, under medical guidance, choose appropriate comprehensive treatment. It is important to develop good daily habits and maintain proper personal genital hygiene.