Tinea unguium. on the left thumb of a 28-year-old man localized yellow-brown to black dyschromas of the distal nail plate, increasing for more than one year. onychodystrophy beginning distally. mycologically a mixed infection of Trichophyton rubrum and Aspergillus spp. was detected.
Melanoma, malignant, acrolentiginous. 13 x 10 mm large, extensive, black pigmented tumor of the subungual space and distension of the nail bed of the left big toe in a 61-year-old female patient. Advanced stage with nail destruction.
Melanonychia striata longitudinalis: approx. 0.2 cm wide, dark brown strip of the nail. nail fold very discreetly affected (see inlet). only 1 fingernail is affected. a clinical control (photo documentation) with measurement of the width of the pigment strip is recommended.
Melanonychia striata longitudinalis. solitary, chronically stationary, approx. 1.2 cm long, acral accentuated, linear, sharply defined, brown longitudinal stripe on the right thumb of a 6-year-old boy. No nail fold alteration so far.
Melanonychia striata longitudinalis (detailed picture): approx. 0.4 cm wide, dark brown strip of the nail; nail fold with distinct paraungual rim; especially malignant melanoma of the nail root.
DD. acrolentiginous malignant melanoma: in this case nail hematoma . 6 weeks old (trauma recall), sharp blue-black discoloration of the big toe nail (marked by arrows and line) with discoloration of the epinychium (circle). arrow (right) indicates a streaky (still red) apparently fresh bleeding.
Tinea unguium. dystrophic onychomycosis. colorful, not painful nail discoloration (yellow-blue-green) with nail thickening. part of the nail discoloration is apparently caused by bleeding. Tr. rubrum and molds (Alternaria spp.) have been detected culturally.
Melanonychia striata longitudinalis. approx. 2 mm wide, light brown stripe in the region of the thumbnail in a 7-year-old boy. No involvement of the nail fold, no paraungual border. Currently harmless findings.
Melanonychia striata longitudinalis. initial findings in 2006. Completely asymptomatic longitudinal pigmentation of the nail plate, which has existed for about 2 years and has increased continuously.
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