| • | variants of each other resulting from lymphocyte mediated leakage of erythrocytes (i.e. capillaritis) |
| • | usually no significant venous or arterial insufficiency |
| • | common clinical feature = multiple, pinpoint, non-blanching red or purple macules (Cayenne pepper) |
| • | ddx = cryoglobulinemia (looks like BPP, but with small ulcers), Waldenstrom’s hypergammaglobulinemia |
Schamberg’s disease
| • | (progressive pigmentary purpura) |
| • | with ulceration = cryoglobulinemia until proven otherwise (especially in a woman) |
| • | (especially in a middle aged woman, who don’t get Schamberg’s: says Dr. Halperin) |
| • | also think about Waldenstrom’s hypergammaglobulinemia |
Purpura Annularis Telangectoides (Of Majocchi)
| • | expands in annular configuration, leaving brown sometimes atrophic pigmentation in the center |
Lichenoid Purpura Of Gougerot And Blum
| • | mnemonic: “G.B. Green Bay is flat” |
| • | legs, thighs, and lower trunk |
| • | the chief difference between this and Schamberg’s disease is in the distribution and the presence of lichenoid papular elevations that are often grouped into plaques in this disease |
Eczematid Purpura Of Doucis And Kapetanalcis
| • | mnemonic: “DK Donna Karen’s clothes itch” |
| • | shares same features as Schamberg's, but differs by its extensive nature, shorter course, and pruritis. |
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