Hello, Seems to be sexually transmitted infection as gonorrhea, chlamydia or else. Need best care with expert dermatologist, till the time being approach: - Keep penis clean with antiseptic liquid - Local application of polymycin or neomycin cream - Anti-inflammatory medication as ibuprofen with proteolytic enzymes as trypsin and chymotrypsin - Antibiotic prescription as cephalosporin, fluoroquinolones orally or injectable ceftriaxone as per the clinician concern - Control of blood sugar - Avoid penetrative sex or masturbation (if active) till recovery Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel, General Surgeon