Chilblain lupus: in early stage with livid-red, surface smooth, painful plaques. clinical picture reminiscent of chilblain (frostbite lupus). no further systemic signs of lupus erythematosus. hyperkeratotic nail folds.
Melanoma, malignant, amelanotic. detail enlargement: Cherry-sized tumor, completely eroded on the surface, with yellowish crusts on the edges, sharply defined.
Dermatitis, seborrhoeic: 62-year-old patient with a negative family history of psoriasis. recurrent HV on the trunk for years. no itching. multiple, chronically inpatient, figured, borderline, sometimes itchy, moderately scaly, clearly borderline hardly elevated plaques.
Folliculitis decalvans. scarring hair loss that has been progressing for several years, with itching and occasional pain. in addition to purulent folliculitis, scaly tufts of hair with surrounding erythema appear.
Kaposi's sarcoma epidemic: Dissemination of the angiosarcoma in the skin. Characteristic arrangement of the foci in the cleavage lines. In places the foci merge into larger plaques.
Insect bite; superficial and deep, spot-like distributed, perivascularly oriented, predominantly lymphocytic infiltrate (mixed with a few eosinophilic granulocytes).
Pilomatrixoma (Epithelioma calcificans): Reddish-brown, calotte-shaped node that is displaceable in relation to the underlying tissue, slightly painful, slowly progressive.
Prurigo simplex subacuta: 54-year-old female patient with a clinical picture that has been progressive for two years. severe, uncontrollable itching. the rough papules up to 0.8 cm in size with marginal hyperpigmentation are centrally eroded or ulcerated or even covered with older crusts (centre of the figure). a typical picture of itchy Prurigo simplex subacuta are the scratch artefacts limited to prurigo lesions.
Ecchymosis. circumscribed purple-shaped hemorrhage on the chin of a 14-year-old boy. the lesion is caused by the creation of a negative pressure (suction of a glass) on the chin.
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