Impetigo contagiosa: acutely occurring, persistent for 5 weeks, increasing despite external therapy, localized in the face of an 18-month-old boy, red, erosive, rough papules and plaques, partly covered with yellow crusts; similar skin lesions are visible on the trunk and on all extremities
Mycosis fungoides follikulotrope: generalised clinical picture; smooth plaques that dissect at the edges, with clear evidence of follicular involvement.
Argyrie: diffuse, completely symptom-free brown coloration of the facial areas in the area of exposed areas, which does not recede even in the winter months.
Airborne Contact Dermatitis: chronic (>6 weeks) extensive, enormously itchy and burning eczema with uniform infestation of the entire exposed facial area including the eyelids.
Erythema infectiosum: in cases of moderate feeling of illness, flat, butterfly-shaped redness and swelling of the cheeks; furthermore, exanthema of the extremities
Lentigo solaris: bizarrely configured, brown-black spot; in the centre dark irregular part (see inlet); here, encircled transition to a lentigo maligna.
Verrucae planae juveniles. slightly reddish, partly also brownish and skin-coloured, densely and in places linearly arranged small papules with a matte surface in the face of a 9-year-old female patient. autoinoculation by scratching (Koebner phenomenon). despite extensive findings, a sudden (inexplicable) spontaneous healing occurred after a long-term treatment with a mild keratolytic external therapy (unsuccessful).
Adenoma sebaceum: disseminated, densely packed, chronically stationary (no dynamic development), completely asymptomatic, reddish-brownish, 0.1-0.4 cm in size, red, reddish-brown and skin-coloured, individually standing and aggregated papules with symmetrical, centrofacial emphasis; slight seborrhoea; no comedones.
Sebaceous gland hyperplasia, senile. 74-year-old patient noticed these completely asymptomatic skin changes several years ago. In large-pored (seborrhoeic) skin of the forehead region there are waxy, slightly raised papules up to 0.4 cm in size with a slightly lobed edge structure (see papule top right). The diagnosis of sebaceous gland hyperplasia is fixed at the central porus formation (see papule in the center of the picture).
Airborne Contact dermatitis: chronic (>6 weeks) extensive, enormously itching and burning eczema with uniform infestation of the entire exposed facial area including the eyelids.
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