In this article we have provided answers to frequently asked questions about angular cheilitis and its treatment.
What is angular cheilitis?
Angular cheilitis describes an inflammation that occurs in the corner of the mouth usually associated with a fungal or bacterial infection. It is also called angular stomatitis and perleche. (Note that yeasts such as Candida albicans are botanically related to fungi so the secondary infection is sometimes described as a yeast infection)
What are the main symptoms?
The most obvious symptom is raw, irritated and cracks in the corners of the mouth. This normally happens on both sides of the mouth simultaneously. The lesions may become ulcerated, inflamed and crusty, making it difficult to eat, laugh or smile. In severe cases the cracks can bleed when the mouth is opened. If the condition persists, sufferers may also experience embarrassment and loss of quality of life. Some people end up withdrawing from normal social interactions.
What causes angular cheilitis?
Although angular cheilitis is often aggravated by a fungal or bacterial infection, this is not usually the root cause. Bacteria and Candida yeast species are ubiquitous on our body (and in our saliva) and are normally benign. But if conditions allow (see bullet list below) they can grow into an outbreak causing an infection with negative symptoms. Fungal infections are more commonly associated with angular cheilitis than bacterial ones.
The following conditions/habits can cause angular cheilitis:
- A habit of licking the lips causing them to remain damp from saliva for long periods of time.
- Poor fitting dentures that allow saliva to pool in the corner of the mouth.
- Changes in face shape and jaw architecture as a result of aging, injury or tooth loss. If an overbite develops for example this can increase susceptibility to angular cheilitis.
- A nutrition deficiency in iron, vitamin B2, B12 or zinc.
- An allergic reaction to certain toothpaste, mouthwash or lipstick brands.
- A reaction to certain skin medications.
- Malabsorption conditions where there is an abnormality in absorption of food nutrients in the gut.
Is angular cheilitis contagious?
Unlike oral herpes, angular cheilitis (or angular stomatitis) is not contagious. The two can be distinguished by the part of the mouth that is affected. In general oral herpes or cold sores affects the lips and skin near the middle of the mouth while angular cheilitis is a rash at the corner of the mouth.
Is there a good angular cheilitis home remedy?
Angular cheilitis is a condition that responds well to home remdies and it makes sense to explore the options.
Most home remedies work by changing the local environment around the corner of the mouth to make it less conducive to bacteria and fungal growth. As fungi and bacteria thrive in moist environments, the key is to dry out the area.
These approaches can work in a matter of hours and rely on ingredients commonly available in most households (hence their term "home remedy"). One of the best overnight cures has been described by Katherine Sage in this step by step guide. If you don't have the ingredients at home, they are cheaply available in most decent sized grocery stores.
Should I believe the claims of an angular cheilitis overnight cure?
Of course much depends on the actual approach used, but it certainly is possible to resolve angular cheilitis overnight. The best approaches concentrate on making the corners of the mouth less conducive to irritation, yeast and bacterial growth. In other words removing the conditions that pathogenic organisms (such as yeasts and bacteria) need to survive. An integral part of this is drying the area out - and keeping it that way. Click through to this overnight cure for the details.
Can I use an antibiotic or anti-fungal to cure angular cheilitis?
For severe or chronic cases that don't disappear quickly or respond well to home remedies, you should book an appointment with a doctor. Following a definite diagnosis of whether a bacteria or fungus is involved, you will either be prescribed antibiotic or antifungal medications. Often this is used in combination with a hydrocortisone medication to address the inflammation.
But bear in mind that if you don't remove the root cause of the infection (see causes of angular cheilitis above), it may recur at a later date whatever angular cheilitis cure you use. See the steps laid out below on prevention.
How can I prevent angular cheilitis from happening in the first place?
The best preventative steps to take will depend on the primary cause of the inflammation. So for example if the condition is the result of:
- poor fitting dentures - these should be changed;
- excessive lip licking - use a medicated balm to keep the lips conditioned and make an effort to get out of the lip licking habit;
- overbite or tooth loss - book an appointment with a dentist;
- nutritional deficiencies - adjust your diet accordingly ideally in consultation with a qualified nutritionist; and
- if you suffer from malabsorption syndrome, medical attention should be sought.








