I've been HIV+ for nearly 20 years. My doctor and I guessed it was probably around age 19 when I was infected. I didn't find out until I was 26. At age 19 I remember all of a sudden I had uncontrolled sweating under my arm. Nothing would stop the sweat - I tried the strongest antiperspirants on the market but nothing works. Still at age 39 I continue to sweat under my arm. My viral load is nearly undetectable so I never figured out if the HIV infection had anything to do with it or not. Thanks.
Excessive sweating as you describe has not been generally linked to HIV infection or treatment though HIV can occasionally do strange things to the autonomic nervous system which could impact sweating. If any reader has personal experience in this area or a related reference please post. KH