Sounds like comedone: Many things can cause such bumps but if they have a black tip, it sounds like something called a closed comedone, which is common with acne. But it can be at any clogged pore or hair follicle. Increasing pain, redness or drainage could mean they have become infected. Otherwise, good skin care and using soap and water, and keeping the area dry should help.
Answered 4/2/2013
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