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Genital Blisters, despite negative HSV-1 and HSV-2

Hello Doctors,

I attempted to post this as a followup to a previous conversation, but the site indicated the conversation was closed.  As you know, about 4 1/2 years ago I had an outbreak of genital blisters.  I went to a clinic, the doctor took a scrape and within the same day told me that I was positive for herpes.  I have never had a reoccurrence and tested negative on followup herpes tests (unsure if they were IgG at the time).  You mentioned that it could have been a false-positive Tzanck test.  And I told you I would take an IgG.  I finally took an IgG test, which came back negative.  I accept that I do not have HSV.  My questions are as follows?  

1) What could have caused the initial breakout?  I know you cannot diagnose over the internet, but I am curious as to what could be a non-herpes cause of genital blisters.
2) Could it be something that I should be concerned about transmitting?  
3) Is there a chance that the IgG test is wrong?
4) I had initially been tested at a NYC clinic.  Should I contact them and let them know that my diagnosis was incorrect?   My only concern is that they might have reported this to the state or city and I rather have a "clean" record.

Thank you in advance for your response.
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Avatar universal
Thank you very much.  
Helpful - 0
300980 tn?1194929400
MEDICAL PROFESSIONAL
1.  There are a huge number of possible non-TD skin conditions which can cause a blistering rash.  this includes medication reactions or reactions to other substances that you may have come into contact.  The list is really too long to even make a meaningful guess.
2.  No!
3.  Unlikely in your situation
4.  HSV is not a reportable disease, thus the only place that will have a record of your mis-diagnosis is the clinic.  I see no benefit in letting them know they were incorrect.  It is too long after the event for the clinician who saw you to learn much from their mistake and most experts already k now that about 25% of clinical diagnoses of HSV are incorrect.

Glad to hear of your negative HSV serology.  Take care.  EWH
Helpful - 0

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