Impetigo is a skin infection. It often appears as blisters around the mouth and nose but it can infect skin anywhere on the body. Impetigo can easily spread from one person to another. This infection occurs most often in children.
Impetigo: Sores on the Upper Lip
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Impetigo is caused by bacteria. The most common type of bacteria associated with this infection includes:
- Group A Streptococcus
These types of bacteria are normally found on the skin and in the nose. The bacteria do not cause trouble until it gets under the skin. Bacteria get in under the skin through small cuts, scratches, or insect bites.
Last reviewedDecember 2013by David L Horn, MD, FACP
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.