What is the appearance of sores caused by impetigo?

Impetigo is a highly contagious skin infection that is most commonly caused by bacteria such as Staphylococcus aureus and Streptococcus pyogenes. The hallmark appearance of impetigo is characterized by red sores, which are often surrounded by a yellowish crust. These sores typically appear around the nose and mouth, particularly in young children, although they can occur in other areas of the body as well. The redness of the sores is indicative of the inflammatory response of the skin to the bacterial infection.

The specific location around the nose and mouth is significant because it reflects the common ways in which the bacteria can be transmitted, especially through facial contact or sharing items like towels or utensils. Recognizing the classic appearance of impetigo is crucial for proper diagnosis and treatment, as timely intervention can prevent the spread of this infection to others.