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What Causes A Red Spot On The Penis?

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Posted on Mon, 12 Sep 2016
Question: I have a small flat red spot on my penis. appeared about two weeks ago. It is painless, no itch or discharge and has not really changed shape and has no fluid in it. I was worried that it was herpes or syphilis after a sexual contact about 4 weeks ago
doctor
Answered by Dr. Nishad BN (1 hour later)
Brief Answer:
Doxycycline Prophylaxis will be helpful.

Detailed Answer:
Hi

Thank you for asking HCM

I have gone through your picture. Herpes lesions are painful and there will be burning sensation or itching. So it is not likely to be herpes. Syphilitic chancre can be suspected as it is a painless lesion. If possible you can go for dark field microscopy of scrapings from lesions after consulting a dermatologist. If that is not possible then 1 week of doxycycline antibiotic will be helpful to clear if there is any such infection. Doxycycline is given in dosage of 100mg twice daily for 1 week. This is a prescription drug and you have to approach your local doctor for it.

Let me know if anything not clear.
I am happy to help you.
Thanks.
Above answer was peer-reviewed by : Dr. Prasad
doctor
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Follow up: Dr. Nishad BN (1 hour later)
thank you for your reply. at what stage would the lesion erupt if it was syphilis? Would my pubic lymph nodes not swell as well?
doctor
Answered by Dr. Nishad BN (57 minutes later)
Brief Answer:
Rashes will appear on secondary stage.

Detailed Answer:
Welcome again.

Thank you for your follow up query.

The rashes on body may appear in secondary stage of syphilis. In primary stage there will be just syphilitic chancre on site of entry which is usually on genital area. There can be lymph node enlargement also. Usually this will subside gradually and later on it will develop into secondary stage if not treated with antibiotics.

Let me know if anything not clear.
I am happy to help you.
Thanks.
Note: Hope the answers resolves your concerns, however for further guidance of skin related queries consult our Dermatologist.Click here to book a consultation
Above answer was peer-reviewed by : Dr. Raju A.T
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Answered by
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Dr. Nishad BN

General & Family Physician

Practicing since :2009

Answered : 5482 Questions

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What Causes A Red Spot On The Penis?

Brief Answer: Doxycycline Prophylaxis will be helpful. Detailed Answer: Hi Thank you for asking HCM I have gone through your picture. Herpes lesions are painful and there will be burning sensation or itching. So it is not likely to be herpes. Syphilitic chancre can be suspected as it is a painless lesion. If possible you can go for dark field microscopy of scrapings from lesions after consulting a dermatologist. If that is not possible then 1 week of doxycycline antibiotic will be helpful to clear if there is any such infection. Doxycycline is given in dosage of 100mg twice daily for 1 week. This is a prescription drug and you have to approach your local doctor for it. Let me know if anything not clear. I am happy to help you. Thanks.