Acne vulgaris (overview): recurrent, multiple, disseminated standing retention cysts of 0.3-1.2 cm size on the back of a 38-year-old mansince adolescence; multiple black comedones (blackheads) are also present.
Transitory acantholytic dermatosis (M.Grover): moderately itchy clinical picture with disseminated itchy papules and also papulo vesicles, which has been present for a few weeks; Nikolski phenomenon negative.
Collagenosis, reactive perforating p apules: first appeared about 8 months ago, itchy papules with central depression and hyperkeratotic clot, no known underlying disease.
Scabies granulomatosa, detail section: Intensely itchy, reddish, solitary or grouped papules on the thorax of an 81-year-old resident who had been treated with lindane in a scabies epidemic.
Angiokeratoma corporis diffusum: Periumbilical localized, disseminated, partly spatter-like, partly roundish 1-2 mm large, completely asymptomatic red spots and papules in a 22-year-old man.
Dyskeratosis follicularis: disseminated, chronically stationary, 0.1-0.2 cm in size, intermamillary localized, flatly elevated, moderately firm, non-itching, rough, red, scaly papules which unite at the top to form a blurred plaque; skin lesions have existed in varying degrees in this 53-year-old patient for several years.
Pityriasis lichenoides et varioliformis acuta. after febrile infection acutely occurring, "colorful" exanthema with differently sized papules measuring 0.2-0.8 cm, papulovesicles, erosions, and encrusted ulcers. healing with formation of varioliform scars.
Collagenosis, reactive perforating. detail enlargement: solitary, 0.3-1.3 cm large, red papules with a coarse central horn plug. the smaller papules correspond to an early stage of the disease.
Eczema atopic (overview): severe, universal (erythrodermic) atopic eczema. exacerbation phase since about 3 months. patient with rhinitis and conjunctivitis with pollinosis. total IgE >1.000IU.
Scabies in a 3-year-old boy: since several months existing, massively itching, generalized clinical picture, with disseminated scaly papules and plaques; also linear formations.
Pityriasis lichenoides et varioliformis acuta: Following an unclear febrile infection acutely occurring exanthema with differently sized, symmetrically distributed papules, few papulovesicles and erosions.
Malasseziafolliculitis:multiple, acutely occurring, dynamic, disseminated, follicle-bound, 0.2-0.6 cm large, inflammatory red papules and papulopustules on the back of a 53-year-old female patient. Severe seborrhea, following acne vulgaris in young adulthood; secondary findings include melanocytic naevi and isolated seborrheic keratoses.
Psoriasis vulgaris chronic active plaque type: in addition to long-term psoriatic plaques, disseminated, small psoriatic lesions as a sign of "relapse activity".
Malasseziafolliculitis: disseminated, follicle-bound, inflammatory, 0.5-3 mm papules and papulopustules on the back of a 32-year-old female patient; frequent, even long-term, antibiotic therapy due to bacterial cystitis.
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