stasis dermatitis: flat, sharply limited plaque of the entire right lower leg. lipofasciosclerosis in case of a previously known CVI with beginning papillomatosis cutis lymphostatica. condition after leg ulcer. currently distinct exudation, lymphorrhoea as well as secondary bacterial colonization.
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.
Granuloma pyogenicum (pyogenic granuloma) Rapidly growing, bluish-black, soft, slightly bleeding tumour. Remark: the black colour was caused by thrombosis in the tumour parenchyma.
Vascular (capillary) malformation (so-called naevus flammeus): Congenital, generalized, spotty erythema from the scalp to the sole of the foot in an 8-year-old boy, developed according to age.
Sarcoidosis: anular or circulatory chronic sarcoidosis of the skin. persisting for several years. onset with small symptomless papules with continuous appositional growth and central healing. no detectable systemic involvement.
DD: Rosacea erythematosus- here lupus pernio: 63-year-old female patient with reddish-livid plaque of the nose and previously known chronic pulmonary sarcoidosis.
Stevens-Johnson syndrome: acute, extensive, painful erosions of the red of the lips, the lip mucosa, the tongue and the gingiva in an 18-year-old woman.
Lupus erythematodes chronicus discoides : Solitary blurred plaque with atropical surface, adherent scaling, bizarrely configured scarring (bright areas); distinct painfulness in case of punctiform exposure (e.g. brushing over with fingernail); unpleasant burning sensation when exposed to UV light.
Erythema anulare centrifugum: Characteristic single cell lesion with peripherally progressive plaque, which flattens centrally and is only recognizable here as a non raised red spot.
lupus erythematodes tumidus: chronic, relapsing disease pattern that has been active for months, completely without symptoms; succulent, surface-smooth, red plaques. high sensitivity to light. no hyperesthesia. ANA: negative; DIF: uncharacteristic. good response to antimalarial therapy.
Psoriasis inversa: 69-year-old woman. 6 months at presentation. no manifestations of psoriasis present on the remaining integument. family history but positive: son with known psoriasis vulgaris.
Mastocytomas, cutaneous: moderately consistency-propagated, brownish-reddish, blurred, maculopapular plaques; the Darian sign is positive (development of a wheal after rubbing the efflorescence).
Zoster: in segmental distribution (Th4), grouped vesicles on reddened skin in a 38-year-old man. Moderate pain. Healing without complications. No postzosteric neuralgia. Here is a detailed picture with fresh grouped vesicles.
Tufted hairs:Folliculitis decalvans: Scar plate with wicklike tufts of hair in the centre, also in the marginal area of the scarring (see also under Folliculitis decalvans).
Lupus erythematosus, subacute-cutaneous, multiple, chronically dynamic, increasing, small or extensive red spots as well as red, small, sometimes rough, scaly papules and pustules on the face of a 66-year-old man. Furthermore, extensive, net-like branched telangiectasia can be found. DIF from lesional skin (see inlet; arrows indicate IgG deposits on the dermo-epidermal basement membrane zone and the follicular epithelium)
mucinosis(s). plaque-shaped, idiopathic, cutaneous mucinosis. red, rather sharply defined, cushion-like, smooth plaques in the face of a 42-year-old woman. similar efflorescences were observed in the breast area and on the back.
Nevus flammeus: congenital, asymmetrically arranged, non-syndromal (no tissue hypertrophy, no orthopedic malposition) large-area (telangiectatic) vascular nevus; characteristic are the scattered borders of the red spots.
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).
Bilateral naevus verrucosus in an infant. No symptoms. Psoriasiform aspect of the plaques running in the Blaschko lines, scattered, reddish, slightly infiltrated, scaly.
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