Impetigo

Definition

Impetigo is a highly contagious bacterial skin infection primarily caused by Staphylococcus aureus or Streptococcus pyogenes. It commonly affects children and presents as red sores that rupture, ooze, and form a yellow-brown crust.

5 Must Know Facts For Your Next Test

1. Impetigo can be treated with topical antibiotics such as mupirocin or fusidic acid.
2. Oral antibiotics like erythromycin may be prescribed for extensive cases of impetigo.
3. The condition is highly contagious and spreads through direct contact with infected sores or nasal discharge.
4. Good hygiene practices, such as regular hand washing, are crucial in preventing the spread of impetigo.
5. Complications can include cellulitis, kidney inflammation (glomerulonephritis), and scarlet fever.

Review Questions

• What are the primary causative agents of impetigo?
• Which topical antibiotic is commonly used to treat localized impetigo?
• What are some preventative measures to avoid spreading impetigo?

Related terms

Cellulitis:

A bacterial skin infection characterized by redness, swelling, and tenderness.

Mupirocin:

An antibiotic ointment used topically to treat skin infections such as impetigo.

Glomerulonephritis:

Inflammation of the tiny filters in the kidneys that can be a complication of impetigo.