I have had an on and off rash for a week and on Monday I got a fever. The doctor told me I have hand foot and mouth disease. I'm not sure how I could have gotten it, as I am 23 and don't have contact with children. A lot of the symptoms for ARS are similar to those of HFMD. I want to get tested for HIV again, but wasn't sure if it could create a false positive since I have another viral infection.