Bullous impetigo blisters: what to know

The blisters may enlarge, become cloudy, and break easily, leaving a moist surface that dries into a thin crust. They often appear on the trunk, limbs, or in skin folds, and the surrounding skin can look red or irritated. Bullous impetigo can spread through direct contact with fluid from a blister or through shared towels, clothing, or bedding. It is different from eczema, although irritated skin such as atopic dermatitis can provide an opening for infection. Crusting skin can continue after a blister has opened.

Arrange a clinical review so the diagnosis and extent of infection can be checked. Keep the area clean with gentle washing, pat it dry, and cover open sores with a clean dressing if practical. Wash hands after touching the skin, avoid scratching or squeezing blisters, and do not share towels, clothes, bedding, or personal products. Follow the prescribed course if a clinician recommends antibiotics for skin infection; topical antibiotic therapy may be suitable for selected limited areas, while wider infection may need another approach.

Seek prompt medical care if blisters are spreading quickly, the skin becomes increasingly painful, warm, swollen, or red, or drainage develops. Fever, unusual sleepiness, poor drinking, or feeling generally unwell also warrants urgent assessment. Get immediate help for facial or eye involvement, breathing difficulty, or signs of severe illness. A newborn, older adult, or person with reduced immunity should be assessed promptly rather than managed with home care alone.

Ask whether the appearance fits bullous impetigo, whether a swab is needed, which areas should be covered, and when close contacts can safely share household items again. Confirm how to use any cream or medicine and what change should prompt a recheck.