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Impetigo is classified as a bacterial skin infection, primarily caused by Staphylococcus aureus or Streptococcus pyogenes. This condition is characterized by the presence of red sores or blisters, which can easily rupture and ooze, leading to a characteristic honey-colored crust. It commonly affects areas of the skin that are exposed, such as the face, especially around the nose and mouth, and is often seen in children.

The infectious nature of impetigo makes it significant in terms of transmission, as it can spread through direct contact with sores or indirectly via contaminated items such as towels or clothing. Understanding that impetigo is bacterial is crucial, as it differentiates it from other types of skin infections, influencing both diagnosis and treatment. Antibiotic therapy is usually effective in managing this infection.