Learn AI Health Q&A Men’s Health

What causes blisters on the penis?

Asked by:Boehm

Asked on:Mar 30, 2026 10:24 AM

Answers:1 Views:559
  • Field Field

    Mar 30, 2026

    What is the reason for small blisters on the glans penis? This is a problem that many male friends want to master. Many male friends have noticed many small bubbles on the glans penis in their daily life. They are not sure what the cause is and feel very worried. Most people suspect that they are suffering from serious sexually transmitted diseases. In fact, vesicles on the glans penis are not necessarily a symptom of sexually transmitted diseases. Many diseases can also cause this condition. The andrologist below will give you a detailed introduction to the cause of small blisters on the glans penis. We hope to be able to help you.

    What is the reason for small blisters on the glans penis? Small blisters on the male genitals are common in men with long foreskins. However, vesicles on male genitals are mostly caused by sexual organ infections. For men who have dirty sex, they should be alert to the possibility of genital herpes. For men who have never been married, most of them have balanitis.

    1. Genital herpes

    Genital herpes is a major manifestation of genital tract infection, most of which are caused by viral infections. Genital herpes usually presents with obvious small blisters. Genital herpes mostly occurs at the intersection of skin and mucous membranes. At first, the skin is slightly red, and then a large number of small water scars the size of sharp needles appear, with slight itching and burning sensations.

    2. Balanitis

    Balanitis is a common andrological infection of the male reproductive organs. The main symptoms of balanitis are redness, swelling and burning pain in the foreskin, which worsens during urination, and purulent secretions may be discharged from the mouth of the foreskin. If the foreskin is rotated too long, it will be seen that the inner plate of the foreskin and the glans penis are hematomatous, swollen, and if severe, there will be shallow ulcers or erosions with small blisters.

    3. Vaginal eczema

    Genital eczema is a more common type of eczema. It is limited to the skin of the vagina, sometimes extending to the area around the anus, and rarely to the male genitals. The clinical symptoms of vaginal eczema include localized redness, swelling, and intense itching of the vaginal skin. Many papules and blisters ranging from the size of a pin tube to a millet grain may also appear.

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