Check this out as possible causes of excessive sweating-
http://www.medhelp.org/symptomsearch?addterm=excessive+sweating
God bles, Kara
I would definitely seek out a doctors care. Profuse sweating can be caused by a number of things. It's hard to know exactly what could be your root cause. There is a risk, since you mentioned recently being sick, that an infection of some sort could be the cause. Please check back with us after you see your doctor. Good luck.
-Dusty
Could this be hormonal? From what you are saying you keep getting a cold and the flu? I would get your blood work checked to make sure there isn't something going on. You mention you live in the tropics, could you have been bitten by something? I think blood tests could tell you a lot. Sounds to me like your body is fighting something, that's why the sweat. Until you find out what this is I wouldn't load up on antibiotics. If it's viral antibiotics will just make you feel worse and can't help. Good luck, keep in touch and let us know what you find out.