Derived from hair follicles and typically found in the head, neck, or upper extremities, pilomatrixomas occur commonly in children. They often can be recognized by a bluish appearance. The skin overlying the pilomatrixoma may appear discolored in part because it is so close to the skin’s surface. Pilomatrixomas tend to grow over time, and the standard treatment is removal. It is important to keep in mind that pilomatrixomas are considered tumors and also they are nearly always benign.