Psoriasis diagnosis and differential diagnosis

Psoriasis diagnosis: ① the good parts: the scalp, called lateral limbs stretch, when the symmetry in the knee; ② rash characteristic: silver white Linxie, film and the point of bleeding; ③ special pathological changes, chronic disease, most of the winter-summer light, repeated attack and easy diagnosis. Pustular psoriasis of the main features of the psoriasis on the basis of a majority of aseptic bulk of small pustules, recurrent illness. Joint-frequently occur in unusual type or pustular psoriasis, joint disease symptoms and severity of the severity of skin lesions parallel. Disease-red skin dry diffuse Chaohong, a large number scaling, a history of psoriasis. Identification of disease should be the following: 1. Seborrheic dermatitis and skin lesions of psoriasis limited to the scalp with the identification of seborrheic dermatitis. Seborrheic dermatitis lesions Linxie was patchy erythema, Linxie small greasy yellow, curettage Linxie no point bleeding, skin lesions realm unclear, sparse hair thinning loss, fragmentation fascicular hair. 2. 2 syphilid have sexual intercourse and dirty hard Xiagan history, rash widely distributed, fortune plantar have keratinizing scaling Ban Qiuzhen, syphilis sero-positive. 3. Simple chronic moss in the limbs stretch of the dice side Jiyao, hypertrophy of the disease and psoriasis should be identified, the latter intense itching, skin lesions were moss-like lesions, almost no Linxie. 4. Arthritis rheumatoid arthritis and psoriasis should identify the disease, which Cardiff had the symptoms of inflammation of symmetry to increase, and more violations of the proximal joint, rheumatoid result in positive, non-psoriatic lesions And a change. 5. Pityriasis rosea occurred in the trunk and limbs, proximal, rash and sticks to long axis line. 6. Continuity acromegaly dermatitis incidence of traumatic history of many Zhizhi, pustular early in the cluster were injured Zhizhi, forming a lake of pus, and then spread upward to Pu, septic scar can be generalized body. 7. Herpes-like pustules disease occurred in pregnant women, good in the groin, navel Waterloo, armpit, under the breast, such as wrinkle-wall, the ring arranged for groups or ring septic scar, systemic symptoms significantly. 8. Red of red disease psoriasis and other reasons to be caused by the disease of the red identification, a former history of psoriasis, can sometimes be found remnants of psoriasis lesions typical.