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STDs (Expert Forum)
Lower thigh blister - herpes?
Answered by
University of Washington
Seattle - WA
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This forum is limited to questions about STDs other than HIV/AIDS. For questions about HIV prevention, or if you have general questions about safe sex (e.g., condoms, how to protect yourself from HIV and STDs), please visit the HIV Prevention and Safe Sex Forum
Some of the most common types of questions concern the risk of HIV or STD after a particular sexual exposure, and about symptoms that might or might not be due to HIV. If your question is along these lines, please visit the HIV Prevention and Safe Sex Forum.
Lower thigh blister - herpes?
by helpthanks21, Oct 29, 2007 10:43AM
I am a 21 year old male. My last sexual encounter was five months ago. The sex was brief (about 2 minutes before we mutually decided not to continue) and unprotected. There was some genital touching and rubbing.
Three weeks after this encounter I had an STD check. All results were negative, and I tested negative for herpes 1 & 2. However I decided to get re-tested for herpes after 12 weeks to ensure an accurate diagnosis. Again, the results for herpes 1 & 2 came back negative.
Yesterday night I noticed a small red patch on my right thigh about the size of the end of a pencil. It is located 8 cm above the knee on the inner side. In the shower this morning though I noticed that the bump had blistered into what I thought was one blister. The skin was soft after the shower and popped when I pushed it. There was noticeable muscle pain around the blister. Tonight, the blister has scabbed and the scab is depressed from the top layer of skin. There is a bit of blood in the scab, and a tiny (pin head) separate blister joining it that I did not notice this morning. If I know my body, this will be healed in 2 days or so.
Questions:
1) What is the validity of the two separate negative HSV 1 & 2 results at 3 weeks and 12 weeks?
--> A bit more information: I have been given three results for both tests:
HSV Type 1 IgG (EIA): Neg
HSV Type 2 IgG (EIA): Neg
HSV Group IgM (EIA): Neg
2) This new lesion shows all the signs of herpes - however I can find very little reference to herpes appearing in the area just above the knee. What are your thoughts on the location of the lesion?
3) If I was infected at the time of my last sexual encounter, would antibodies have built up even if my first outbreak was not until last night (20 weeks after possible infection)?
I am resigned to the fact that this is herpes, despite two negative blood tests and the unusual location. However, I value your opinion highly and would like to know what you think. Thanks.
Three weeks after this encounter I had an STD check. All results were negative, and I tested negative for herpes 1 & 2. However I decided to get re-tested for herpes after 12 weeks to ensure an accurate diagnosis. Again, the results for herpes 1 & 2 came back negative.
Yesterday night I noticed a small red patch on my right thigh about the size of the end of a pencil. It is located 8 cm above the knee on the inner side. In the shower this morning though I noticed that the bump had blistered into what I thought was one blister. The skin was soft after the shower and popped when I pushed it. There was noticeable muscle pain around the blister. Tonight, the blister has scabbed and the scab is depressed from the top layer of skin. There is a bit of blood in the scab, and a tiny (pin head) separate blister joining it that I did not notice this morning. If I know my body, this will be healed in 2 days or so.
Questions:
1) What is the validity of the two separate negative HSV 1 & 2 results at 3 weeks and 12 weeks?
--> A bit more information: I have been given three results for both tests:
HSV Type 1 IgG (EIA): Neg
HSV Type 2 IgG (EIA): Neg
HSV Group IgM (EIA): Neg
2) This new lesion shows all the signs of herpes - however I can find very little reference to herpes appearing in the area just above the knee. What are your thoughts on the location of the lesion?
3) If I was infected at the time of my last sexual encounter, would antibodies have built up even if my first outbreak was not until last night (20 weeks after possible infection)?
I am resigned to the fact that this is herpes, despite two negative blood tests and the unusual location. However, I value your opinion highly and would like to know what you think. Thanks.
Doctor's Answer
by H. Hunter Handsfield, M.D., Oct 29, 2007 09:44PM
, Oct 29, 2007 09:44PM
There are innumerable causes of blister-like sores of the skin. There is no realstic chance of herpes. If you were infected at your last encounter, your first symptoms would involve the genitals, not your thigh; and your blood test would be positive by 12 weeks.
You don't have herpes. Beyond that, I cannot say what it might be. See a health care provider if the lesion persists or if a similar problem recurs in the future.
Best wishes-- HHH, MD
You don't have herpes. Beyond that, I cannot say what it might be. See a health care provider if the lesion persists or if a similar problem recurs in the future.
Best wishes-- HHH, MD
