hyperhidrosis
"In first year university I started sweating so much under my arms that I would have to change my undershirt 5 times a day and only wear dark colours so I wouldn't show my sweat stains. I tried every deodarant and anti-perspirant I could find and nothing worked. I went to the doctor and he recommended Drysol (no prescription needed). I used it for the first night and covered my underarms with lots of it. It was itchy and my skin was irritated in the morning with a red rash but I did not sweat again! The small amount of pain from the rash was worth it. I only have to re-apply once every couple of years! Amazing."