Medical Specialty >> Dermatology

Doctors Lounge - Dermatology Answers

Back to Dermatology Answers List

If you think you may have a medical emergency, call your doctor or 911 immediately. Doctors Lounge ( does not recommend or endorse any specific tests, physicians, products, procedures, opinions, or other information that may be mentioned on the Site.

DISCLAIMER: The information provided on is designed to support, not replace, the relationship that exists between a patient/site visitor and his/her physician. Please read our 'Terms and Conditions of Use' carefully before using this site.

Date of last update: 10/18/2017.

Forum Name: Dermatology Topics

Question: Red Rash on side of penis

 Gratuit - Tue Jul 24, 2007 6:50 am

I am a 41 year old male. No surgeries. I had protected sex 2 weeks ago. A day later, a red rash deleveloped at the base of my penis on one side and the other side was a "pimple like" thing, or like a pimple from a canker sore?
It is very sensitive and sore. I have tried Polysporin but it does not seem to help?
Can you offer any suuggestions?
This is teh first time this has ever happened?
 Dr. Chan Lowe - Sat Jul 28, 2007 3:34 pm

User avatar Hi Gratuit,

There are a few STD's that can cause these symptoms, most notably herpes and a less common infection called chancroid. I would recommend you be tested since using protection does not protect 100% against these.

Also, it may simply be an area of trauma from friction that has caused the skin irritation.

I would recommend this be evaluated unless it is better in the next day or two.

Best wishes.

| Check a doctor's response to similar questions

Are you a Doctor, Pharmacist, PA or a Nurse?

Join the Doctors Lounge online medical community

  • Editorial activities: Publish, peer review, edit online articles.

  • Ask a Doctor Teams: Respond to patient questions and discuss challenging presentations with other members.

Doctors Lounge Membership Application

Tools & Services: Follow DoctorsLounge on Twitter Follow us on Twitter | RSS News | Newsletter | Contact us