This is a rare problem but the more research I do on the internet the more forums and support groups I see with men experiencing this issue with NO answers, regardless of how many urologists and dermatologists they've seen.
I am 32 years old. Early November (about 4 months ago) I had unprotected anal, vaginal, and oral sex with a female. A week later some sort of infection occurred in my urethra. Burned terribly when I urinated and head of my penis got extremely red and inflamed. However, even after being tested and treated for EVERYTHING, all of my results were negative and antibiotics and anti-fungal (oral and topical) did nothing. The infection only went away after 3 weeks on it's own after the doctor's tried everything.
Since then I've been left with swelling/inflammation on the tip of my penis and redness around the area. This gets worse after sexual activity or masturbation. Luckily, no pain, itching or irritation. It just looks infected. This has not improved at all. The head of my penis does not look the same. I've been told everything from I have psoriasis, trauma to the skin, nothing at all, and lots of "I'm not sure". I've seen 3 dermatologists and 3 urologists.
Tested negative for:
HSV 1 and 2, HIV, Gonorrhea, Chlamydia, Trichomoniasis, UTI, Yeast Infection
Failed Treatments -
Topical and Oral anti-fungal medication for yeast infection
7 days of Doxycycline
One time dose of Azithromycin
Creams - Clotrimazole, Fluocinolone Acetonide, Vaseline, Coconut Oil
Supplements - 1000mg of Vitamin C per day, 6000mg of Garlic per day