Last night i noticed clusters of small red bumps on the tops of my feet and on the inside of my knees. also a few bumps on a few fingers.?

See below: I would see a dermatologist or your primary care physician. It would be helpful to see the bumps and to obtain a proper history.

Dermatitis: This sounds like some form of dermatitis. That is usually a skin problem from something you came in contact with or excessive sweating to the area, or a side effect to a medication. See your doctor for the exact cause and proper treatment.