Hello I share your concern Looking at your description This could be caused by infection like STI or inflammatory reaction as a result of repeated trauma or allergy Here I would like to know about your age and related medical history like diabetes or history of unprotected sex? I see patients with similar complaints in my clinic and I would advise them for a battery of tests like blood for hemoglobin, CBC Liver and kidney function test, blood sugar And investigations to rule out STI like gonorrhoea herpes and VDRL for syphilis Meanwhile maintain good hygiene wash it with antiseptic soap or solution and apply antiseptic or antibacterial ointment You may require a course of antibiotics under supervision of your doctor. Hope this answers your question Best wishes