I have gotten ingrown hairs on my penis in the past and just let them be. Recently I noticed a large pea sized bump on my penis and am worried if it is herpes or not. I have had the same girlfriend for the better part of two years and havent had sex with anybody and she hasnt either. I went to the doctor and he said he wasnt sure what it was and could be an std but Im confused how I would have contracted that. I did some research online and think it is a sebaceous cyst, but Im still concerned it might be something else. It grew to the size of a pea and didnt really hurt or itch but started to be pretty sensitive when it got larger. It ruptured or popped last night by itself when I looked at it before bed and it was just a little blood.  I am going in to get it checked out again in a couple of days but am worried it could be something.  Any advice would be great thanks!!
Thanks for contacting ChatDoctorFrom your description I do agree with you that this maybe a sebaceous cyst. These are glands that are blocked and build up material under the skin. These is completely benign and do not have any long term effects. Since the cyst has already ruptured I recommend that you keep the area clean with soap and water. You may also try small amount of newsprint or other topical antibiotic ointment. This will heal within the next 1-2 weeks. It may reappear at some time if the blocked gland becomes blocked again. Hope this answers your question. Please contact us again with your health care concerns and questions