Late summer and early fall bring plenty of mosquito bites, and many children scratch them until the skin breaks and weeps. What looks like an ordinary scrape can turn into impetigo when a honey-colored crust forms and the sore starts to spread. This article covers how to recognize it, what care at home looks like, and how to decide about daycare.

Why It Happens

Impetigo is a bacterial infection of the top layers of skin. The CDC explains that both group A Streptococcus (Streptococcus pyogenes) and Staphylococcus aureus can cause non-bullous impetigo. Healthy skin keeps these bacteria out fairly well, but bug bites, scrapes, eczema, and irritated diaper areas break that barrier. Scratching an itchy bite is one of the easiest ways for bacteria to get in.

The CDC clinical guidance describes lesions that start as small bumps (papules), become pustules, and then break down into crusted sores. The crust tends to look golden or honey-colored, which is one clue that separates it from the plain dry scab of a scratch. It often appears around the nose and mouth and on the arms and legs.

How It Differs by Age

Babies are more likely to get it in moist skin folds such as the neck or diaper area, and because they cannot say it itches, they may just be fussy or keep reaching for the spot. Toddlers often get it on the face after picking the nose or rubbing the mouth. Children in daycare or preschool handle the same toys and surfaces, so it can pass from child to child. School-age children tend to get it on scratched arms and legs, and they can usually be coached not to scratch.

Care at Home

Even when impetigo seems likely, having a pediatrician or dermatologist confirm it is better than choosing a medicine at home. According to CDC guidance, a few sores are often treated with an antibiotic ointment, while more widespread sores may need an antibiotic taken by mouth.

At home, parents can:

  • Wash sores gently with soap and lukewarm running water and pat dry rather than rubbing.
  • Cover the area loosely after applying any prescribed ointment so the child cannot scratch it.
  • Keep fingernails short and wash hands often, for both the child and caregivers.
  • Use separate towels, clothing, and bedding and launder them regularly.

For daycare, the AAP child-care guidance says a child can generally return once treatment has started and the sores are covered. Some programs set their own rule, such as 24 hours after treatment begins, so it is worth checking the policy where your child is enrolled.

Common Misunderstandings

First, that any blistering bug bite will simply heal on its own. Some do, but spreading sores or growing yellow crusts are a reason to be seen. Second, that picking off the crust speeds healing. Forcing it off can injure the skin and spread bacteria. Third, that any antibiotic cream in the cabinet will do. Impetigo can need a medicine matched to the likely bacteria, so a prescription after an exam is the safer route. Fourth, that once one sore heals the problem is over. Children can carry it to other spots by scratching, so hand hygiene matters.

Signs That Need Emergency Care Right Away

Go to urgent care or the emergency room right away if the redness spreads quickly and becomes hot and very painful, if your child has a high fever and seems limp, if the face or area around the eyes swells so much that the eye is hard to open, or if there is trouble breathing or unusual sleepiness. If it is not an emergency but sores keep spreading after a few days, new sores appear despite treatment, or the child is only a few months old, contact your pediatrician. Consider talking with a pediatrician if you are unsure. This information reflects general guidance from the United States; if you live elsewhere, check with a local pediatrician. This information isn’t a diagnostic tool and doesn’t replace advice from a medical professional.