psoriasis of the nails. severe onychodystrophy with wave-like transverse ligament with simultaneous psoriatic attack of the nail wall (paronychium). missing eponychium (cuticle). partially crumbly nail matrix on the nail surface as well as on the distal edge. no pain symptoms.
Psoriasis of the nails: circumscribed damage to the nail root with alteration of the cuticle, marked by arrows and crossbars. Oval circles around an onycholysis area. The marked crossbars denote so-called Beau-Reilsche transverse furrows.
Onycholysis, drug-induced or light-induced. detail enlargement: reddish-brown discoloration of the middle finger of the right hand of a 12-year-old girl, existing for 14 days after doxycycline therapy. similar discoloration occurred on all hand and toenails. the nail matrix is lifted off.
Psoriasis of the nails: pronounced subungual psoriasis (oil stain), recognizable by a translucent discoloration of the nail plate, which is caused by parakeratotic keratinization.
Onychogrypose (complicatively superimposed): moderately pronounced onychogrypose in an 18-year-old soccer player's ring, here complicatively superimposed by onychomycosis, recognizable by the yellowish streaky discoloration
chronic paronychia: existing for months (physiological growth of the fingernail about 0.10 to 0.12 mm per day), slightly painful paronychia with growth disturbances of the nails. nail fold (encircled) reddened and swollen. moderate pain under pressure. from time to time a purulent secretion empties under pressure. cuticles completely missing.
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