Sexually Transmitted Diseases/sores on penis


recently I had unprotected sex and received oral sex that was quite rough. Now I have 2 sores on my scrotum.  They are tender but appear to be healing. the person I had sex with went and got check and was clean, no issues. one is on top and one is on bottom.  I have used hydrogen peroxide to clean them but they still foam when it is applied. Also, my groin lymph nodes are slightly swollen and tender as well. I cannot find any pictures that look the same as what I have so could this be an STD?

Hi Sam,
It is difficult to assess something that I can't see, and since a photograph was not included, I can't speculate about what it might be. You mentioned that the person you had sex with "... got check and was clean, no issues."  Please do not use these expressions, because it means something different for everyone.  What tests? Just a gonorrhea and chlamydia test? A blood test for syphilis? A swab for herpes or MRSA?

MRSA, methicillin resistent staph aureus, is a common cause of painful bumps such as what you describe. MRSA is ordinarily not considered a sexually transmitted disease, although the germs can be spread through skin to skin contact.  MRSA can cause tender, enlarged/swollen lymph nodes. Hydrogen peroxide will not be helpful, however incision and drainage by a doctor, a prescriptive antibiotic such as Bactrim, and sometimes a topical antibiotic cream or ointment may be helpful. It sounds like this is the major cause of your bumps, and therefore needs medical attention.

Good luck!

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Mark P. Behar


Almost any question or concern about gay men's health issues, sexually transmitted infections, abnormal Pap smears, anal cytology (anal "Pap smears"), etc. There is no such thing as “d/d free” or “clean” (free of infection), so why do so many of us deceive ourselves into thinking that some people are indeed totally free from a potentially infectious disease, like HIV, herpes, hepatitis, syphilis, chlamydia, warts, gonorrhea, etc., just because they say so? Clinical laboratory tests are not perfect, and having a “negative” or “nonreactive” test does not mean that a person is free from infection. Perhaps at the moment the test was taken, the person was uninfected; or, perhaps, the test wasn’t sensitive enough to detect presence of the infection. There is really no way that anyone can determine that they are truly “disease free,” and there are over a hundred of infectious conditions that can be spread without your knowing anything. Rather than trying to “pre-screen” or “serosort” a potential sex-mate with deceptive questions that are impossible to know by today’s technologies, a wiser option may be to consider everyone infected with something, and either use appropriate protective measures (“safer sex”), or accept the responsibility and consequences of possibly “catching” something from someone who’s hotter than expected (pun intended!). There is much research that supports the contention that an HIV positive person reliably taking HIV medications, and having an undetectable viral load, presents a lower risk for transmission of HIV than people who may think or say they are HIV negative, but are not. Food for thought!


Family Practice PA since 1981; Volunteer Clinician for Brady East STD (BESTD) Clinic, Milwaukee, since 1977; answered STD questions submitted to their web site. Professionally lectured at national and regional Physician Assistant and Nurse Practitioner conferences, and at national gay & lesbian health conferences on topics including HIV/AIDS, herpes, hepatitis, STDs, human papilloma virus (the cause of venereal warts), abnormal Pap smears, gay and lesbian health issues, among others.

Co-Founder, Lesbian, Bisexual, & Gay Physician Assistant Caucus of the American Academy of Physician Assistants, Inc.; American Academy of Physician Assistants; Wisconsin Academy of Physician Assistants; National Co-Chair (2012-16), National Association of Black and White Men Together: A Gay, Multiracial Organization for All People (NABWMT)

Journal of the American Academy of Physician Assistants (JAPA) Q Visions, Quarterly Newsletter of the NABWMT

Bachelor's of Arts, 1972 (University of Wisconsin, Milwaukee, WI) Graduate Credits Experimental Psychology, 1972-75 (Tulane University, New Orleans, LA) Physician Assistant, Bachelor's of Science, 1981 (George Washington University, Washington, DC); Masters in Physician Assistant Studies, 2000 (University of Nebraska Medical Center, Omaha, NE)

Awards and Honors
Colposcopy Recognition Award (CRA), the American Association of Colposcopy and Cervical Pathology; Distinguished Fellow, Clinical Preceptor, American Academy of Physician Assistants; Fellow, Wisconsin Academy of Physician Assistants

Past/Present Clients
Brady East STD Clinic, Milwaukee, WI Milwaukee Health Services, Inc. (Martin Luther King Heritage Health Center), Dept. of Family Medicine and Early Intervention Program for HIV Infected Persons

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