What should you know about Fucidin for angular cheilitis?

Angular cheilitis causes soreness, cracking, redness, or crusting at one or both corners of the mouth. Saliva collecting in the crease can soften the skin and allow irritation or infection to develop. Bacteria are one possible contributor, while yeast, eczema, contact irritation, dental factors, or nutritional problems may also be relevant.

Fucidin contains fusidic acid, a topical antibiotic. It will not treat every cause of angular cheilitis, and using an antibiotic when it is not needed can irritate the area or encourage resistance. A clinician or pharmacist can inspect the corners and decide whether it fits.

Use Fucidin only as directed and keep it away from the inside of the mouth unless specifically instructed. Pat the corners dry after eating or drinking, avoid licking or picking the cracks, and use a bland barrier recommended by a clinician. [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) can help protect irritated skin.

If inflammation is prominent, a clinician may consider [Topical Corticosteroids](/treatments/medical-dermatology/topical-corticosteroids/), sometimes alongside treatment for an identified infection. Do not apply a steroid cream to the face or mouth corners without advice, because the product and duration matter.

Arrange an assessment if cracks keep returning, spread beyond the corners, bleed, or do not settle with directed care. Seek earlier advice if you have extensive mouth pain, trouble eating or drinking, facial swelling, pus, or signs of an allergic reaction after applying a product.

Could this be bacterial, yeast-related, irritant, or eczema-related? Is Fucidin suitable for the skin at my mouth corners? What barrier product and treatment duration should I use, and should recurrent episodes be investigated?