um, actually my mother had the same problem. She started developing a rash one day and then it turned painful so we went to see Dr. Guo immediately. She said it was a simple rash and that it would go away. However it didn't. Instead, we went to an American doctor and he diagnosed her with Shingles asap. We still go to Dr. Guo for our yearly check-ups and for colds and flu but I am still kind of weary...