causes impetigo infection
School sores is caused by staphylococcus aureus or streptococcus pyogenes. Staphylococcus aureus is responsible for the majority of these problems.
Causes primary impetigo:
An impetigo infection can occur when the bacteria invades otherwise healthy skin through a cut, insect bite or other injury. This is known as primary impetigo.
Causes secondary impetigo:
An infection can also occur when the bacteria invades the skin as a result of the skin barrier being disrupted by another underlying skin condition, such as head lice, scabies or eczema. This is known as secondary impetigo.
An impetigo infection can spread to other people through close physical contact or by sharing towels or flannels. As the condition does not cause any symptoms until four to 10 days after initial exposure, it is often spread to others unintentionally.
This skin infection is thought to be more common in children because their immune system has not yet fully developed.
In adults, impetigo is usually the result of injury to the skin often by another dermatological condition such as dermatitis. Children are commonly infected through a cut, scrape or insect bite, but they can also develop this skin disease without having any notable damage to the skin.
Staph bacteria produce a toxin that causes spreading to nearby skin. The toxin attacks a protein that helps bind skin cells together. Once this protein is damaged, bacteria can spread quickly.
When school sores is caused by Group A streptococcus, it begins as tiny blisters. The blisters eventually burst to reveal small wet patches of red skin that may release fluid. Gradually, a tan or yellowish-brown crust covers the affected area, making it look like it has been coated with honey or brown sugar.
Impetigo that is caused by Staphylococcus aureus may cause larger fluid-containing blisters that first appear clear, then cloudy. The blisters are more likely to stay intact longer on the skin without bursting.