Dermatitis herpetiformis. multiple, disseminated standing, itchy, scratched excoriations on the right arm of a 15-year-old patient. the scratched excoriations are located at sites where grouped vesicles had appeared a few days before. overall, the disease has existed for several months and shows a chronically recurrent course.
Granuloma anulare disseminatum. detail enlargement: Solitary or confluent, 0.2-1.5 cm in size, bluish to brownish, non-scaling or only slightly scaling spots, papules and plaques on the trunk in a 73-year-old male.
Zoster in the trigeminal region. 80-year-old female patient developed vesicles after initial unilateral cephalgias and dysesthesias, followed by hemorrhagic crusts and necroses in the region of the trigeminal I.
Acroangiodermatitis. detail from the above figure. 0.2-0.4 cm large, initially isolated, then aggregated, deep red to reddish-livid papules develop from the smallest red (haemorrhagic) spots with a smooth surface, which finally confluent to form large plaques.
Enteritis regionalis, skin lesions, chronic, acneiform, follicular and parafollicular, in places abscessing inflammatory reactions on lower abdomen and thighs. 42-year-old woman with enteritis regionalis. Further findings: Striae cutis after pregnancy.
Dyskeratosis follicularis. infestation of the Rima ani. chronic, intertriginous, whitish sooty, blurred, macerated, superficially rough, clearly increased in consistency, itchy and unpleasant smelling plaques. peripherally the characteristic picture of dyskeratosis follicularis with disseminated red or red-brown papules. on the left side 2 melanocytic nevi.
Vasculitis, leukocytoclastic (non-IgA-associated). multiple, acute, symmetric, since 2 weeks existing, localized on both lower legs, irregularly distributed, 0.1-0.2 cm large, sharply defined, symptomless, hemorrhagic spots and blisters as well as beginning incrustations.
Larva migrans. linear plaque, subepidermally situated, tortuous, constantly itching gait on the right hollow foot. conspicuously in the area of the gait structures described blister formation.
Sarcoidosis, subcutaneous nodular form:known pulmonary sarcoidosis; skin findings: subcutaneously and cutaneously located nodules and plates which can be easily distinguished from the surrounding area and which slide on the support.
Lymphomatoid papulosis: Patient, 73 years of age. Within a few days a red, solid nodule appeared on the nasal wing. In the biopsy atypical dermal infiltrates with CD30-positive blasts. Within a few more days multiple similar nodules spread over the upper trunk.
At control 8 weeks after initial diagnosis the nodule at the nasal fossa is completely regressive leaving a milieu, but a new nodule 5 mm further cranially. The nodules at the trunk are regressive.
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