I Have This Skin Rash On My Arm Near Elbow.
I believe it is shingles.
Detailed Answer:
Hello dear, welcome to Ask a doctor's service.
I read your query and here is my advice.
According to your description of rash and symptoms it matches the symptoms of shingles.
When you did the test in laboratory they could have tested you for viral infection too. Also the doctor may have suspected shingles only by looking at the lesions.
I believe it is shingles since it has fluid filled vesicles, burning sensation,pain and tenderness.
If you are currently having the rash you can send me a photo of it in reports.
The treatment consists on antivirals such acyclovir orally to help it not to spread and recover early.
Hope I have answered the question .
Let me know if I can assist you further.