Fusidic acid for impetigo: what to know

Fusidic acid is applied to the skin rather than taken by mouth. It works against susceptible bacteria at the treated area. It may be unsuitable when sores are widespread, deep, close to the eyes, or not caused by bacteria. The diagnosis matters because crusting skin can also accompany other rashes, including Atopic Dermatitis.

Do not use an old tube, share medication, or apply it to a different rash without advice. Repeated or inappropriate antibiotic use can make future infections harder to treat, so follow the prescriber’s directions carefully.

Clean and dry the area gently before applying the prescribed amount. Wash your hands before and after application unless your hands are the treated area. Keep the medicine away from the eyes and mouth, and do not cover the skin with an airtight dressing unless instructed. Complete the recommended course and avoid picking the crusts. More guidance is available under Topical Antibiotic Therapy.

Contact the prescriber if redness expands, pain increases, fresh sores continue to appear, or the skin is not improving as expected. Stop and seek urgent advice for facial swelling, breathing difficulty, or a severe blistering or widespread rash after application. Eye-area infection, fever or marked illness needs prompt assessment and may require Antibiotics For Skin Infection.

Ask why fusidic acid is suitable, where to apply it, how often to use it, and what improvement should look like. Check whether an eczema flare or another condition could be contributing to the sores.