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Image Number 4955 (Lichen myxedematosus)

Papules,skin coloured

Diagnosis: Lichen myxedematosus

Site: Trunk

Sex: M

Age: 55

Type: Clinical

Description: Papules coalescing into plaques

Submitted by: Ian McColl

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Differential Diagnosis


 Lichen myxedematosus is a rare papular infiltrating disorder where mucin is slowly deposited into the dermis, initially as papules but later forming diffuse plaques and nodules and in some cases evolving into the condition known as scleromyxedema with facial changes and sclerodactyly changes similar to scleroderma. This process occurs over years. Scleromyxedema has often an associated monoconal gamopathy of IgG Lambda light chains. By definition lichen myxedematosus does not show this.Treatment of both conditions is difficult.

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