Skin deep cavity with white puss on underside of penis

Recently just had the strangest experience, there is a small cavity shallow enough that you can see the white puss through the skin, with a small hole (the size of a thread or needle, with a bit of a tunnel toward the cavity) which was sealed with something hardened and blackish. I’ve had this for as long as I could remember, it used to be painful to touch the black part but recently it’s been numb, I was able to pull it off and it was attached to some white puss, which I could squeeze about half of it out, almost like an extremely deep/wide pimple, I am circumcised. This is FOR SURE not hypospadias as it is way too shallow, it’s only barely skin deep, the puss wasn’t exactly liquid or fluid either, just soft and white.

Hello, guest.

The experience you're describing sounds like it could be an epidermoid cyst or a similar type of skin cyst. However, it's important to note that without a physical examination, it's impossible to provide a definitive diagnosis.

Epidermoid cysts often appear as small, round lumps under the skin, which can be filled with a whitish, pasty substance. They typically develop when skin cells get trapped beneath the surface of the skin.

They can have a central pore or opening, and the contents may be firm or somewhat pliable. The blackish, hardened part you described could have been a keratin plug, which is common in these types of cysts.

Cysts can sometimes become tender or painful, especially if they become inflamed or infected. It's also possible for them to become numb over time.

Squeezing or trying to remove the contents of a cyst on your own can lead to infection or irritation. It's generally advised to have these procedures done by a healthcare professional in a sterile environment.

They can occur anywhere on the body, including the genital area. Some people have these cysts for many years without any changes, while others may see them grow, become irritated, or go away on their own.

Any signs of infection, such as redness, increased pain, warmth in the area, or fever, should prompt immediate medical attention.

For now, it's best to avoid further manipulation of the area to prevent infection. Keep the area clean, and try to see a dermatologist as soon as possible for a proper evaluation and advice on how to proceed.