Diseases
As an organ of the body, the lip can be a focus of disease or show symptoms of a disease:
- Lip herpes (technically Herpes labialis, a form of herpes simplex) is a viral infection which appears in the formation of painful blisters at the lip. It is also commonly known as a cold sore.
- Carcinoma (a malignant cancer that arises from epithelial cells) at the lips, is caused predominantly by using tobacco and overexposure of sunlight. To a lesser extent, it could also come from lack of oral hygiene or poor fitting dentures. Alcohol appears to increase the carcinoma risk associated with tobacco use. It is most often a diffuse and often hyperkeratinised lesion, occasionally has the form of nodules and grows infiltratively, and can also be a combination of the two types. It more often occurs at the lower lip, where it is also much more malign. The lower lip carcinoma is exclusively planocellular carcinoma, whereas at the upper lip, it can also be basocellular carcinoma.
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Famous quotes containing the word diseases:
“Even diseases have lost their prestige, there aren’t so many of them left.... Think it over ... no more syphilis, no more clap, no more typhoid ... antibiotics have taken half the tragedy out of medicine.”
—Louis-Ferdinand Céline (1894–1961)
“The fantasies inspired by TB in the last century, by cancer now, are responses to a disease thought to be intractable and capricious—that is, a disease not understood—in an era in which medicine’s central premise is that all diseases can be cured.”
—Susan Sontag (b. 1933)
“Arrogance, pedantry, and dogmatism ... the occupational diseases of those who spend their lives directing the intellects of the young.”
—Henry S. Canby (1878–1961)