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Initially, the corners of the mouth develop a gray-white thickening and adjacent erythema (redness). [2] Later, the usual appearance is a roughly triangular area of erythema, edema (swelling) and breakdown of skin at either corner of the mouth. [2] [4] The mucosa of the lip may become fissured (cracked), crusted, ulcerated or atrophied.
Cheilitis also called and known as chapped lips, is a medical condition characterized by inflammation of the lips.The inflammation may include the perioral skin (the skin around the mouth), the vermilion border, or the labial mucosa. [1]
Angular cheilitis typically starts with a red dry patch on the corners of the mouth. It can be on one or both sides, with a dry, scaly appearance, according to the Cleveland Clinic.
The commissure is the corner of the mouth, where the vermillion border of the superior labium (upper lip) meets that of the inferior labium (lower lip). The commissure is important in facial appearance, particularly during some functions, including smiling. As such it is of interest to dental surgeons.
Perioral dermatitis is a rash typically around the mouth, that spares the vermilion border. [10] Cheilitis glandularis may present with a burning sensation over the vermilion border. This chronic progressive condition is associated with thinning of the skin of the lips and ulceration. [11] Infections may involve the vermilion border.
The commissures (corners of the mouth) are not usually involved. [2] [6] Affected individuals may experience symptoms such as a dry sensation and cracking of the lips. [7] It is usually painless and persistent. The appearance is variable. White lesions indicate hyperkeratosis. [7]
This usually occurs beneath an upper denture. Sometimes angular cheilitis can coexist, which is inflammation of the corners of the mouth, also often associated with Candida albicans. Stomatitis rarely develops under a lower denture. [2] The affected mucosa is often sharply defined, in the shape of the covering denture. [2]
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