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Onychotillomania in Adult
See also in: Nail and Distal Digit
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Onychotillomania in Adult

See also in: Nail and Distal Digit
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Contributors: Vivian Wong MD, PhD, Susan Burgin MD, Bertrand Richert MD, Robert Baran MD
Other Resources UpToDate PubMed

Synopsis

Onychotillomania, or nail-picking disorder, is an uncommon disorder characterized by destruction of the fingernails and/or toenails caused by repeated self-induced trauma. The trauma may be caused by biting (onychophagia), repeated picking with pushing back of the cuticle and nail fold (habit tic deformity), or use of instruments such as scissors, knives, or razor blades. Onychotillomania presents with characteristic or bizarre morphologies of the nail plate and damage to the nail bed and periungual skin depending on the type of self-destructive behaviors employed by the patient.

Patients may have insight into the self-induced nature of their disorder, or they may completely deny any involvement.

The disorder is often associated with an underlying psychiatric disorder such as obsessive-compulsive disorder, a specific phobia, body dysmorphic disorder, impulse control disorder, a delusional disorder, depression, or suicidal ideation. Onychotillomania may be one form of self-mutilating behavior seen in the Lesch-Nyhan and Smith-Magenis syndromes.

Codes

ICD10CM:
F95.9 – Tic disorder, unspecified

SNOMEDCT:
60259009 – Onychotillomania

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Last Reviewed: 01/14/2017
Last Updated: 10/16/2017
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Onychotillomania in Adult
See also in: Nail and Distal Digit
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Onychotillomania : Absent cuticle, Nail plate deformity, Self-mutilating behavior, Enlarged lunula, Compulsive behavior
Clinical image of Onychotillomania
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