Impetigo: the causes

The main cause of impetigo is a bacterial infection caused by Staphylococcus aureus or Group A Streptococcus.

The disease can develop on pre-existing lesions: insect bites, eczema, dermatitis, chicken pox lesions.

There are two types of impetigo: bullous and non-bullous impetigo.

Bullous impetigo

Bullous impetigo is caused by staphylococcus aureus and is characterized by clusters of bubbles that look like blisters.

It is less common than non-bullous impetigo and especially affects newborns and babies.

It is often located around the orifices (nose, mouth) and in the gluteal region. It can be confused with herpes, especially when it is located next to the mouth.

Non-bullous impetigo

Non-bullous impetigo, the most common, may be caused by staphylococcus aureus or group A streptococcus.

It is characterized by vesicles that quickly turn into melliceric crusts (honey-colored) and yellowish, focusing mainly on the face (around the orifices, next to the nostrils and the mouth), but can also touch the trunk and members.

The lesions cause itching and, when the crusts fall, they look like raw wounds or burns.

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