What causes blisters on a man's penis?

Sep 27, 2022 Source: Cainiu Health
Disease description:

My genitals are slightly itchy and uncomfortable, and I've noticed blisters appearing on them. Could you please tell me what causes blisters on a man's penis?

Doctor's answer (1)
Dr. Li Mingchuan
Blisters on a man's penis may result from penile trauma, excessive stimulation, or pressure, which can lead to blister formation. Additionally, blisters on the penis could be caused by the herpes virus, a sexually transmitted infection that may be accompanied by symptoms such as pain. Treatment options include oral medications such as brivudine tablets or valacyclovir hydrochloride tablets, as well as topical application of erythromycin ointment.