Knuckle pads, fake L84.x

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

Chewing pads; Fake knuckle pads; pararticular tylositis; Pseudo Knuckle Pads

Definition
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Over the extensor sides of the proximal interphalangeal joints II to IV localized, coarse, pea-sized, yellow-brown, hyperkeratotic calluses due to permanent mechanical stress. S.a.u. throat calluses.

Etiopathogenesis
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Permanent mechanical trauma, including habitual scrubbing or rubbing (tic). See below artifacts. Often the connection between artificial permanent mechanical stress and reactive callus formation is unclear to those affected. In the case of very intense irritation, e.g. by chewing or biting, reactive fibrotic dermal changes may occur in addition to epidermal changes.

Therapy
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Masking with salicylic acid-containing plaster and mechanical removal. Psychotherapeutic help should be sought in the event of an artifact.

Disclaimer

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

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Last updated on: 29.10.2020