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Image Number 826 (Psoriasis)

 
Morphology:
Plaque

Diagnosis: Psoriasis

Site: Leg

Sex: M

Age: 25

Type: Clinical

Description:

Submitted by: Yahia Albaili

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Differential Diagnosis

History: Psoriasis is a common, chronic, relapsing, inflammatory skin disorder with a strong genetic basis. The plaque type is the most common, though several distinctive clinical variants of psoriasis exist. Plaque psoriasis most typically is characterized by circular-to-oval red plaques distributed over extensor body surfaces and the scalp. The plaques usually exhibit silvery scaling as a result of epidermal hyperproliferation and dermal inflammation.  Up to 10% of patients with plaque psoriasis also will suffer from psoriatic arthritis. Acute flares or relapses of plaque psoriasis also may evolve into more severe disease, such as pustular or erythrodermic psoriasis.

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