Rhagade. 75-year-old patient with a hyperkeratotic ?fingertip eczema? that has been present for years. Deep, extremely painful oblong substance defects that occur repeatedly at the same sites. No clinical signs of a local infection.
Panaritium, which developed in an HIV-infected patient approximately 3 months after a previously successful antiretroviral therapy with the protease inhibitor indinavir.
Mixed connective tissue disease. hyperkeratoticnail folds with elongated capillaries and focal haemorrhages. Note the splatter-like scars on the back of the fingers as well as the expression of focal, now healed scarred, cutaneous vascular occlusions.
Fibrokeratome, acquired, digital. 7 years old, slightly size progressive, pressure dolent, growing out under the nail, approx. 0.5 cm diameter, red knot with horny surface in a 62 year old female patient.
Thrombangiitis obliterans. 32-year-old patient with a nicotine abuse lasting for years and a patchy palmar erythema existing since 6 months as well as mummified fingertip necroses.
Acrodermatitis continua suppurativa: chronic, recurrent, sterile pustular disease of the acromion, which leads to atrophy and loss of nails if it occurs repeatedly and persists for a long time (see figure).
Squamous cell carcinoma of the skin: carcinoma of the nail bed, which was misjudged as a fungal disease of the toenail and whose infiltrating growth had led to an almost complete onychodystrophy.
dermatomyositis: reflected light microscopy. hyperkeratotic nail folds. pathologically enlarged and torqued capillaries. older bleeding into the nail fold.
Lupus erythematosus systemic (late onset) characteristic "collagenosis hands" with persistent, acaral accentuated livid-red plaques, hypercratic nail fold and small hemorrhages. 83-year-old patient with known (since several years proven) systemic lupus erythematosus.
Nail psoriasis: unspecific nail dystrophy (which is also found in this way in chronic hand dermatitis), caused by paronychial infestation of the thumbs.
Mycobacterioses, atypical. 3 months old, developing from a red papule, firm, covered with whitish scales, free of scales at the edges, reddish-brown, completely painless nodule. culturally proven infection by M. marinum.
Fibrokeratoma, acquired digital. for about 3 years persistent, slightly progressive, subungual, hard, exophytic growing tumor on the left big toe of a 37-year-old female patient. The nail of the big toe is displaced upwards to a large extent. There is a secondary finding of nail dystrophy.
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