Hello,
Firstly I got a single pimple on the middle finger of my hand,don't know y... then after sm months got another on my thumb.. I applied 2 or 3 times DUOFILM gel to it,the above hard covering removes but still I get another pimple below it... n nw another very small pimple is arising near to the one in the thumb... please tell me about it,what I do for it

Its unusual to get pimples on your hands. Maybe what you have been getting are warts ? Warts are caused by a virus. You should see a doctor either way for proper diagnosis and treatment.