Hello I share your concern Recurrent bumps of penis and genitalia warrants detailed evaluation by a battery of tests like blood for CBC, AEC ( absolute eosinophil count), liver function test, kidney function test, urine culture; swab culture from discharge or oozing and serological testing for STDs like herpes, Trepenomal disease like syphilis and warts . In my opinion you should consult a dermatologist or ventral disease specialist for these tests and prescription of a course of antibiotics under observations Meanwhile you can apply hot packs and antibacterial or antiseptic ointment after washing it properly with soap and water. Change your undergarments frequently and dry it up in sunlight. Hope this answers your question please free free to discuss further with a photograph and more relevant medical history so That I will be able to tell you more precisely Best wishes