Your risk is highest for acne if you are a teenager, although women often face a high likelihood of the bumps due to hormonal changes linked with menstrual cycles, birth control pills
and pregnancy. Red bumps
on the cheeks or other parts of your body that fade
and then reappear in different sizes often signal hives, or urticaria, says KidsHealth.org. Hives usually resolve without treatment and don't leave markings on your cheeks.