Hello Sandip..Thanks for the query From your description, I assume that the diagnosis made by the doctor is Herpes. Two possibilities : 1)Herpes Zoster :This is a painful, blistering skin rash due to the varicella-zoster virus, the virus that causes chickenpox the virus remains inactive in certain nerves in the body. It occurs after the virus becomes active again years later. It may develop in any age group but you are more likely to develop in Elderly or people with weakened immune system.Most frequently,an antiviral drug is prescribed. This drug helps reduce pain, prevent complications, and shorten the course of the disease. Acyclovir, famciclovir, and valacyclovir may be used. The medications should be started within 72 hours of symptoms like pain/burning. It is best to start taking them before the blisters appear.Analgesics are advised to control pain and inflammation.Herpes zoster usually clears up in 2 to 3 weeks and rarely recurs. 2) Herpes genitalis: Genital herpes is a common and highly contagious infection usually spread through sexual intercourse. Usually this infection is caused by the herpes simplex virus-2.People who have an initial outbreak following a genital HSV infection can expect recurrences.Ant viral drugs are given in brief course (seven to 10 days) to relieve symptoms or prevent them from getting worse. Physicians also prescribe an antiviral drug to keep on hand in case of another flare-up; this is called intermittent therapy .If outbreaks are often, one may be considered for taking an antiviral drug longer for suppression therapy. Hope this helps..Take care!