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Gnatophyma-Erythematous and edematous plaque on chin and lower lip

Gnathophyma involves swelling of the chin.[1]: 693  It is a type of lesion associated with rosacea, a common chronic inflammatory skin disorder of the sebaceous (oily and fatty) glands characterized by redness, swelling, and acne-like pustules.

Other lesions associated with rosacea, which affects about 10 percent of fair-skinned people normally between the ages of 30 and 50, include:

Treatment for mild to moderate cases includes an oral antibiotic or topical gel or cream.[2]

See also


  1. Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.
  2. Wolff, Klauss (2013). Color Atlas and Synopsis of Clinical Dermatology, Seventh Edition. New York: McGraw Hill Professional. pp. 130–132. ISBN 9780071793032.