What should you know about impetigo on the chin?

The skin may begin with a small red area, an itchy blister, or a shallow sore. After fluid dries, a yellow or honey-coloured crust can form around the mouth or along the chin. The infection may be easier to spread when the skin is scratched, shaved, or irritated. Similar crusting can occur with other skin problems, including eczema; [Crusting Skin](/symptoms/skin-crusting/) is a useful related symptom topic, but an examination may be needed to tell conditions apart.

Arrange a medical assessment, especially when new spots are appearing. Wash your hands after touching the area, keep the sore gently covered when practical, and avoid picking or shaving over it. Use a separate towel, face cloth, pillowcase, and razor; wash used fabrics and do not share them. Follow the prescribed course exactly if a clinician recommends [Topical Antibiotic Therapy](/treatments/medical-dermatology/topical-antibiotic-therapy/) or [Antibiotics For Skin Infection](/treatments/medical-dermatology/antibiotic-therapy-for-skin-infection/). Do not apply leftover medicine from another episode.

Seek prompt care if redness, warmth, swelling, pain, or discharge is increasing, if the infection is near the eye, or if you feel feverish or unwell. Urgent assessment is sensible when swelling makes it difficult to open the eye, drink, or breathe, or when a child seems unusually sleepy. A clinician can check whether this is impetigo or another infection and decide whether treatment needs to be changed.

Could this be impetigo rather than irritated or eczematous skin? Which areas should I treat, and how should I clean the crust first? When can I return to close-contact activities, and what should household members do if they develop sores?