Onychotillomania - Nail and Distal Digit
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.
F95.9 – Tic disorder, unspecified
60259009 – Onychotillomania
- Median canaliform dystrophy (median nail dystrophy, dystrophia unguium mediana canaliformis, or Heller dystrophy) – Marked by a longitudinal split, usually midline or just off-center, starting at the cuticle and growing toward the free edge. There are often a few short, chevron-shaped cracks that extend laterally from the split, giving the appearance of an "inverted fir tree." There may also be an enlarged lunula.
- Lichen planus
- Twenty-nail dystrophy
- Epidermolysis bullosa acquisita
- Mechanical or frictional trauma
- Glomus tumor
Last Updated: 10/16/2017