Also called Ram’s horn nail; Ostler’s nail
Nail is hypertrophied and deformed – discoloured due to thickness – ‘dirty’ brown/yellow in colour. Transverse ridges are common. Onychophosis generally occurs under nail plate.
Assumed that the deformity is due to an uneven production of cells from the damaged nail matrix.
Can affect any nail, but more commonly the hallux.
May have heloma durum in nail bed (may be missed during treatment)
Results from trauma to the nail – usually a single episode. Poor self-care is also an issue
Hemionychogryphosis – complication of congenital malignment of toe nail
Management – regular reduction of nail plate with nail cutters and drill or permanent surgical removal of nail.
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