Impetigo

Impetigo is a common and highly contagious skin infection that mainly affects the outer layer of the skin. It usually appears as red sores or blisters that can burst and form a characteristic honey-colored crust. This condition primarily involves the skin, especially on the face, hands, and other exposed areas. It is caused by bacteria, most often Staphylococcus aureus or Streptococcus pyogenes, which enter through small cuts or insect bites. The infection can cause itching, discomfort, and sometimes mild pain. While it mainly affects children, anyone can develop impetigo. The sores can spread to other parts of the body or to other people through close contact or shared items.

Impetigo is a superficial bacterial skin infection characterized by the formation of vesicles, pustules, and honey-colored crusted erosions. It primarily affects the epidermis and is caused by exotoxin-producing strains of Staphylococcus aureus and/or Streptococcus pyogenes. The pathogenesis involves bacterial colonization and local invasion following minor skin trauma, leading to inflammation and epidermal damage. Clinically, it presents with non-bullous and bullous forms, with the non-bullous type being more common. The condition is highly contagious and can lead to secondary complications such as cellulitis or post-streptococcal glomerulonephritis. Diagnosis is primarily clinical, supported by bacterial culture if needed. Impetigo is significant due to its prevalence in children and potential for rapid spread in community settings.