I am a 29 year old guy and have what appear to be small, red, pimple-like bumps on the areas around my knees and right above the knees. The do not itch or burn or hurt in any way. I've had them for as long as I can remember and they really appear more in the summer months. I am not sure if they're ingrown hairs or heat bumps. Either way, how do I get rid of them and prevent them from appearing.