Picture of Baby Acne

Baby acne, or neonatal acne, is typically caused by exposure to maternal hormones in the womb. Hormones stimulate the baby's sebaceous (oil) glands and produce pink pimples. The condition is not dangerous and resolves without treatment in weeks to months. Rashes in infants accompanied by malaise, fever, cough, and lack of appetite may indicate a more serious condition that warrants prompt medical evaluation.