Impetigo is a highly contagious disease caused by streptococcus or staphylococcus bacteria. It causes a superficial skin infection which appears red with yellow or golden crusts. It is seen frequently in children on the face, upper trunk, and arms. Note that the nose is also infected.
Review Date 11/10/2020
Updated by: Ramin Fathi, MD, FAAD, Director, Phoenix Surgical Dermatology Group, Phoenix, AZ. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.