Impetigo is a skin
infection that occurs predominantly in children. The causative pathogens are streptococci and staphylococci.
The arms and face are most
susceptible to impetigo; the legs are most susceptible to an ulcerative form, ecthyma. Both forms may follow a break in the skin or occur secondarily to dermatitis, insect bites, and fungus infections. The lesions progress to oozing and then become crusted. Itching is common and scratching can spread the
infection. Systemic antibiotics should effect a prompt recovery.