What Causes Swelling Around Joints And Knuckles Of Right Hand?

hi my name is ann, and my right hand keeps swelling around joints and knuckles, it is really bad at night and in morning I cant make a fist , some days it will go down by afternoon some days it doesent, my left hand has some symptoms of same but not as bad. my finger joints like lock up and stick in morning an throuout day. is there a safe medication I can get from my doctor or a steroid to get rid of this problem. I have been taking aleve, tylonal, excedrine, advil, nothing is working : [