If I could speak to you and show you a picture could you point me in the right direction? Dry your hands, then gently cleanse your genital area with soap and water. There is a selection of salicylic acid available for purchase online. They could be the manifestation of other diseases, from syphilis to haemorrhoids or papules sort of pimples. About 40 types of HPV are sexually transmitted. They occur due to blockages in the lymphatic system. I have black brown patches or spot on my penis glans.