WHAT IS IT?
Impetigo is a bacterial skin infection, either Streptococcus or Staphylococcus. The face and other exposed areas are most likely to be affected. Impetigo affects primarily children, but adults can be infected by it as well. It is more common in warm climates.
HOW IS IT DIAGNOSED?
History is of the appearance of an itchy rash.
Physical exam shows the typical small, multiple, red-rimmed collections of pus (pustules). The infection is in the surface of the skin, not a deep infection.
Tests: A microscopic examination of a sample of the pus will confirm the infection.
HOW IS IT TREATED?
Antibiotics are used to treat this skin infection.
WHAT MIGHT COMPLICATE IT?
Deeper infection of the skin is possible, forming a boil. Uncommonly, the Streptococci that cause impetigo can result in glomerulonephritis (an acute kidney disease).
PREDICTED OUTCOME
Impetigo is readily treatable.
ALTERNATIVES
Infection of hair follicles (folliculitis) or erysipelas can resemble impetigo.
APPROPRIATE SPECIALISTS
Dermatologist and infectious disease specialist.
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