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Angular cheilitis is most often caused by a Candida (yeast) infection, bacterial infection, or a combination of both. Contributing factors include saliva pooling at the corners of the mouth, nutritional deficiencies (especially iron, zinc, or B vitamins), ill-fitting dentures, dry lips, and a weakened immune system.

Angular cheilitis itself is not considered directly contagious in the way that cold sores are. However, if the cause is a fungal or bacterial infection, close contact such as kissing could theoretically transfer microorganisms. It is not a sexually transmitted infection.

Cold sores are caused by the herpes simplex virus and typically appear as fluid-filled blisters on or around the lips. Angular cheilitis is caused by fungal or bacterial organisms and appears specifically at the corners of the mouth as cracking, redness, and crusting. A physician can help distinguish between the two.

Yes. Deficiencies in iron, zinc, riboflavin (vitamin B2), and other B vitamins are well-recognized contributors to angular cheilitis. If deficiency is suspected, your physician may recommend lab testing and supplementation alongside topical treatment.

With appropriate treatment, most mild to moderate cases of angular cheilitis begin to improve within a few days and resolve fully within one to two weeks. Persistent or recurrent cases may require longer treatment or investigation of an underlying cause.

Mild cases may improve with over-the-counter antifungal creams, good lip hygiene, staying hydrated, and avoiding licking the corners of the mouth. However, if symptoms persist beyond a week or worsen, a prescription-strength antifungal or antibiotic may be needed. A physician evaluation helps ensure the right treatment is used.

Doctronic uses AI-powered evaluation to gather detailed information about your symptoms and health history. A licensed physician then reviews your case and, if appropriate, creates a personalized treatment plan that may include a prescription. The entire process takes place online, so you never need to visit a clinic.

Yes. Doctronic works exclusively with licensed physicians who review and approve every treatment plan. All consultations are HIPAA-compliant, and our medical processes are regularly audited to ensure safety and quality. Doctronic is available to adults 18 and older in any U.S. state.