Impetigo overview

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Impetigo is a superficial skin infection most common among children age 2–6 years. People who play close contact sports such as rugby, American football and wrestling are also susceptible, regardless of age. The name derives from the Latin impetere ("assail"). It is also known as school sores.

Pathophysiology

The infection is spread by direct contact with lesions or with nasal carriers. The incubation period is 1–3 days. Dried streptococci in the air are not infectious to intact skin. Scratching may spread the lesions.

Risk Factors

Impetigo is often associated with insect bites, cuts, and other forms of trauma to the skin.

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