Impetigo on the ankle: what to know

Shoes, socks, sweat, and repeated scratching can rub an ankle lesion and disturb its crust. Impetigo may look like a cluster of small blisters or shallow sores with drainage and crusting. Swelling of the foot or lower leg is not something to ignore, especially if redness is moving away from the original spot. A clinician may also consider contact irritation, an infected bite, or eczema such as [Atopic Dermatitis](/conditions/atopic-dermatitis/).

Rinse gently, pat dry, and cover the lesion with a clean dressing that does not press tightly. Change it when wet or dirty. Wear clean, loose socks and footwear, avoid picking, and do not share towels or clothing. Wash hands after changing the dressing. If a clinician confirms impetigo, [Topical Antibiotic Therapy](/treatments/medical-dermatology/topical-antibiotic-therapy/) may be suitable for some limited infections; follow the directions exactly.

Seek prompt review if the patch expands, becomes warm or painful, drains more, or affects walking. Urgent care is appropriate for fever, rapidly spreading redness, red streaks, marked swelling, severe pain, or feeling very unwell. Those findings can point to infection beyond the surface and may call for [Antibiotics For Skin Infection](/treatments/medical-dermatology/antibiotic-therapy-for-skin-infection/).

Ask whether footwear is causing friction, how often to change the dressing, whether the swelling is expected, and which symptoms mean you should return urgently.