Prayer nodules L85.9

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 04.05.2022

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Synonym(s)

Betknie; Betknoten; hyperkeratosis malleoli lateralis; Yoga sign

Definition
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Reactive, mechanically induced, grayish-yellowish, dirty-looking skin thickening with hyperkeratosis that occurs in areas exposed to repeated mechanical stress during religious activities.

Affected areas are mainly the patellar region ("prayer knee") mostly in Muslims (also occupationally in tile and parquet layers), as well as the forehead region (Muslims).

Furthermore, verrucous plaques can also occur on the malleoli laterales and the metatarsal joints of the Os metatarsale V in people who regularly sit cross-legged on the floor.

Therapy
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Avoid mechanical irritation (e.g. by padding). Nourishing externals like 2-5% urea cream R102.

Literature
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  1. O'Goshi KI et al (1998) Mucin deposition in a prayer nodule on the forehead. Dermatology 196:364.

Disclaimer

Please ask your physician for a reliable diagnosis. This website is only meant as a reference.

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Last updated on: 04.05.2022