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Cheilitis is a general term, and there are many recognized types and different causes. According to its onset and course, cheilitis can be either acute or chronic. [2] Most cheilitis is caused by exogenous factors such as dryness (chapping) and acute sun exposure. [2] Allergic tests may identify allergens that cause cheilitis. [3]
Cheilitis glandularis—This is inflammation of the minor salivary glands, usually in the lower lip, eversion and swelling of the lip. [11] Chronic sclerosing sialadenitis is a salivary gland manifestation of IgG4-related disease. [13] [14]
Angular cheilitis (AC) is inflammation of one or both corners of the mouth. [4] [5] Often the corners are red with skin breakdown and crusting. [2] It can also be itchy or painful. [2] The condition can last for days to years. [2] Angular cheilitis is a type of cheilitis (inflammation of the lips). [6]
Persistent or recurrent enlargement of the lips, causing them to protrude. If recurrent, the interval during which the lips are enlarged may be weeks or months. The enlargement can cause midline fissuring of the lip ("median cheilitis") or angular cheilitis (sores at the corner of the mouth).
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. Cold sores are one common infection. [12]
Plasma cell cheilitis (plasma cell gingivitis, plasma cell orificial mucositi) Plasmoacanthoma; Proliferative verrucous leukoplakia; Pyogenic granuloma (eruptive hemangioma, granulation tissue-type hemangioma, granuloma gravidarum, lobular capillary hemangioma, pregnancy tumor, tumor of pregnancy) Pyogenic granuloma; Pyostomatitis vegetans
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Actinic cheilitis is cheilitis (lip inflammation) caused by long term sunlight exposure. Essentially it is a burn , [ 2 ] and a variant of actinic keratosis which occurs on the lip. [ 5 ] It is a premalignant condition , [ 6 ] as it can develop into squamous cell carcinoma (a type of mouth cancer ).