Welcome to healthcaremagic
From your description it could be Herpes zoster
. Herpes zoster is a viral infection caused by varicella
, the same virus causing chicken pox
. Usually it presents as small blisters along the distribution of a nerve, only on one side. It could be painful and sometimes itchy. Vesicles will become scabs and then fall off usually in 2 weeks time. I suggest you see a dermatologist
for confirmation of the diagnosis. If you can upload a photo it would help.
Hope this helped