onychodystrophy (nail dystrophy)
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Introduction
Dystrophy of the nails.
Etiology
- onychomycosis (< 50%)
- thyroid disease
- parathyroid disease
- peripheral vascular disease
- Raynaud's disease
- anemia
- onychodystrophia mediana canaliformis
- psoriasis
- more common in patients with psoriatic arthritis
- aging
Clinical manifestations
- thick, yellow, crumbling toenails
Laboratory
- KOH scraping, microscopic exam for septate hyphae of dermatophytosis
- fungal culture for dermatophytosis
Management
- treat underlying disorder
- do not treat with antifungals unless onychomycosis identified
More general terms
More specific terms
Additional terms
References
- ↑ Medical Knowledge Self Assessment Program (MKSAP) 14, 16, 18. American College of Physicians, Philadelphia 2006, 2012, 2018