My friend has told me that she has had a strange rash appear. It started on her buttocks then spread to her thigh and genital area. The rash was very painful at first and she ran a slight fever. It then itched her. She was told by a doctor in Saigon that it was a condition called "zona" but it left some scars. She also said that with this she started experiencing some joint discomfort in her ankle. Have you ever heard of this condition?
I have not heard that term before, but it sounds like a herpesvirus infection -- it could be either herpes simplex (causing genital herpes) or varicella zoster (causing shingles). I think the ankle discomfort is most likely something else.