Benign pigmented purpura

Synonym(s)

Pigmented purpuric dermatitis; pigmented purpuric eruption; subgroups: Schamberg disease (progressive pigmentary dermatosis); itching purpura of Loewenthal; eczematid-like purpura of Doucas and Kapetanakis; pigmented purpuric lichenoid dermatosis of Gougerot and Blum; lichen aureus; purpura annularis telangiectoides (Majocchi disease)

Definition

Group of chronic diseases characterized by extravasation of erythrocytes in the skin with marked hemosiderin deposition

Pathogenesis

Venous hypertension, exercise, and gravitational dependency possible cofactors

Clinical manifestation

Reddish-brown, speckled discoloration in patches or plaques

Schamberg variant: cayenne pepper-like punctate petechial macules in a larger pur-puric patch

Lichen aureus variant: golden-yellow patch, most commonly on the leg Majocchi variant: annular patches of purpura with telangiectasia Gougerot and Blum variant: lichenoid surface change

Differential diagnosis

Thrombocytopenia; cryoglobulinemia; cutaneous T-cell lymphoma; clotting disorders; stasis pigmentation; scurvy; leuko-cytoclastic vasculitis; drug hypersensitivity reaction

References

Piette WW (1994) The differential diagnosis of purpura from a morphologic perspective. Advances in Dermatology 9:3-23

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  • summer fraser
    What is benign pigmented purpura?
    8 years ago

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