I'm male, 15 years old. I have these weird bumps on my forearms that if popped produce white/tan puss. Once popped the skin hardens up after about 6 hours and becomes discolored compared to the rest of my skin. There is also a possibility that two or three hairs will grow out of a single follicle near or on the spot that this occurs. If this helps I play football and I do follow proper hygiene