Good for you. I am having similar condition.

My pimple problem just started the two years ago when I was studying organic chemistry (I was suspecting that some organic reagents might have caused the problem). It is weird that my pimple problem went away for five years but started again since 2004. I have tried numerous preion (tetracyclin, benzamycin, tretinoin cream) and OTC (benzy peroxide 10%, sulfur cream, glycolic peel, salicylic acid) medications for my condition. The only effective treatment for my problem is Tretinoin Cream. I am thinking about giving Differin a try but it is outrageously expensive.

I am in professional school now. Thus, I am under a great deal of stress from studying. Oh well, I will definitely take your advice and start playing sports again.