I have no idea what the problem is but the last 3 weeks I have been sweating constantly under my arms. And I have to worry every time I wear a shirt I wear a sweatshirt to hide it. I'm not nervous or annything and it only happens at school. What is the problem I have tried getting new deodorents buy still the same what is causing it and what do I do to stop it and I'm not hot or annything please help. Please

How old are you? THis actually does matter. At certain stages particualtry when going through puberty and a few yers of that time your sweat glands there start working and might work overtime for at least a few years... it usually subsides when you reach maturity.

Well I'm 13 and I sweat under my arms it is soooo embarrassing

That's why... Puberty... those sweat glands are just starting to work... with the hormone swings at that age... your body will do some things that are weird and uncomfortable. THe good thing is in time it will decrease to what is a more normal amount... but you will always sweat there. THere are products that will reduce the sweat and prevent the odors both. Personally, I find Arrid XX Dry stick works best for me ( they have unscented as well as masculine and feminine scents)... just be aware a deoderant alone won't stop the sweating... only control the odor. You need a Anti-persperant / Deoderant. And you need to use it daily after showers. And it will keep it under control.

Its puberty, and time to tell mom so he can show you what to do.