Thuốc (thường là lymphocytic) ASA, NSAIDs, sulfa, chloroquine, penicillin, quinidine, thiazide, thuốc lao, các phenothiazin, vv - Nhiễm trùng-strep, RMSF, GC, meningiococcemia, lao, giang mai, virus | L iuy I iy CI OUIIO IIIVI iy oyiiuiuiiic JUI IQ QI IIIWIIV UIOQII IO anv ui IIIWI minocycline etc. . PALPABLE PURPURA Cutaneous vasculitis I. Cutaneous and systemic usually leukocytoclastic unless noted - Drug usually lymphocytic ASA NSAIDs sulfa chloroquine penicillin quinidine thiazides TB drugs phenothiazines etc. - Infection strep RMSF GC meningiococcemia TB syphilis viruses especially hepatitis etc. - Collagen vascular diseases usually a livedo pattern rheumatoidarthritis SLE dermatomyositis Sjrgen s inflammatory bowel disease etc. - Carcinoma lymphoma leukemia lung and bowel n Henoch-Schenlein purpura abdominal pain mucosal bleeding hematuria arthralgias Headache Polyarteritis nodosa and other related granulomatous arteritides allergic granulomatosis Weg r s etc. ene cutaneous - Hypersensitivity vasculitis idiopathic allergic vasculitis anaphylactoidpurpura all likely the same entity usually due to infection drug or systemic disease. - Pityriasis lichenoides et varioliformis acuta PLEVA This is lymphocytic as opposed to leukocytoclastic. - Erythema elevatum diutinum - Sweet s syndrome - Urticarial vasculitis erythema multiforme - Cutaneous polyarteritis nodosa n J XV IVIIVUICUIJ - Traumatic purpura - Resolving erythemas see differential of Erythema - Toxic venoms - Waldenstrm s hyperglobulinemic purpura - Hypersensitivity vasculitis - Purpuric oddities capillaritis Schamberg s purpura cayenne pepper pattern on legs Majocchi s purpura purpura annularis telangiectoides Gougerot-Blum purpuric lichenoid dermatitis Ducas and Kapetanakis eczematoid purpura. .