Risk factorsBy Mayo Clinic staff
Factors that increase the risk of impetigo include:
- Age. Although anyone can develop impetigo, it most commonly occurs in children ages 2 to 6.
- Crowded conditions. Impetigo spreads easily in schools and child care settings.
- Warm, humid weather. Impetigo infections are more common in summer.
- Certain sports. Participation in sports that involve skin-to-skin contact, such as football or wrestling, increases your risk of developing impetigo.
- Broken skin. The bacteria that cause impetigo often enter your skin through a small skin injury, insect bite or rash.
Older adults and people with diabetes or a compromised immune system are more likely to develop ecthyma, a deeper and more serious form of impetigo.
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