Hello,
Swollen itchy bumps on penis is commonly due to genital rashes (poor hygiene), Jock itch, a
fungal infection, or ringworm of the groin area. It can also be due to
contact dermatitis, psoriasis, irritation from chemicals such as soaps or detergents. Get STD tests done to be on the safer side. If tests are positive, you will get treated with antibiotics / antivirals.
Presently, take care of your hygiene. Take regular bath and apply ointment
hydrocortisone on the area affected to get relieve from itching. Since you also have rashes, it could be fungal infection. Take a course of anti fugal (
Fluconazole) orally. Ointment
clotrimazole when applied topically on the area affected is equally effective. If sexually active avoid sex for a couple of days. Stay away from addictions if any.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Nupur K., General & Family Physician