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DDx Strength: Good
Fever, History of Hepatitis C virus infection, Arthralgia, Rash or multiple lesions, Palpable purpura, Symmetric extremities distribution, 40-49 year old Male

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Leukocytoclastic vasculitisLeukocytoclastic vasculitis
Leukocytoclastic vasculitis59
VasculitisVasculitis
Vasculitis116
Polyarteritis nodosaPolyarteritis nodosa
Polyarteritis nodosa50
Granulomatous vasculitisGranulomatous vasculitis
Granulomatous vasculitis10
Immunoglobulin A vasculitisImmunoglobulin A vasculitis
Immunoglobulin A vasculitis41
Rocky Mountain spotted feverRocky Mountain spotted fever
Rocky Mountain spotted fever36
Acute meningococcemiaAcute meningococcemia
Acute meningococcemia35
Mixed cryoglobulinemia syndrome
Mixed cryoglobulinemia syndrome2
CryoglobulinemiaCryoglobulinemia
Cryoglobulinemia55
CryofibrinogenemiaCryofibrinogenemia
Cryofibrinogenemia15
Eosinophilic granulomatosis with polyangiitisEosinophilic granulomatosis with polyangiitis
Eosinophilic granulomatosis with polyangiitis11
Essential mixed cryoglobulinemia
Essential mixed cryoglobulinemia1
South American bartonellosisSouth American bartonellosis
South American bartonellosis9
Disseminated candidiasisDisseminated candidiasis
Disseminated candidiasis24
Rheumatoid arthritis
Rheumatoid arthritis71
Granulomatosis with polyangiitisGranulomatosis with polyangiitis
Granulomatosis with polyangiitis45
Rheumatoid vasculitisRheumatoid vasculitis
Rheumatoid vasculitis23
Systemic lupus erythematosusSystemic lupus erythematosus
Systemic lupus erythematosus153
Antiphospholipid antibody syndromeAntiphospholipid antibody syndrome
Antiphospholipid antibody syndrome36
Erythema nodosumErythema nodosum
Erythema nodosum68
Serum sicknessSerum sickness
Serum sickness31
Chronic meningococcemiaChronic meningococcemia
Chronic meningococcemia4
Serum sickness-like reactionSerum sickness-like reaction
Serum sickness-like reaction1
Sjögren syndromeSjögren syndrome
Sjögren syndrome17
Familial Mediterranean feverFamilial Mediterranean fever
Familial Mediterranean fever6
Bacterial sepsisBacterial sepsis
Bacterial sepsis37
Dengue feverDengue fever
Dengue fever21
Drug-induced lupus erythematosus
Drug-induced lupus erythematosus4
Hepatitis B virus infection
Hepatitis B virus infection2
Disseminated intravascular coagulationDisseminated intravascular coagulation
Disseminated intravascular coagulation20
Human immunodeficiency virus primary infectionHuman immunodeficiency virus primary infection
Human immunodeficiency virus primary infection9
Angioimmunoblastic lymphadenopathyAngioimmunoblastic lymphadenopathy
Angioimmunoblastic lymphadenopathy8
Erythema multiformeErythema multiforme
Erythema multiforme120
Streptobacillus moniliformis rat-bite feverStreptobacillus moniliformis rat-bite fever
Streptobacillus moniliformis rat-bite fever10
Microscopic polyangiitis
Microscopic polyangiitis1
Ross River disease
Ross River disease1
Leprosy-Lucio phenomenaLeprosy-Lucio phenomena
Leprosy-Lucio phenomena8
Rift Valley fever
Rift Valley fever2
Cocaine levamisole toxicityCocaine levamisole toxicity
Cocaine levamisole toxicity51
West Nile virusWest Nile virus
West Nile virus8
SclerodermaScleroderma
Scleroderma140
Vibrio vulnificus infectionVibrio vulnificus infection
Vibrio vulnificus infection22
Endemic typhus
Endemic typhus1
Mediterranean spotted feverMediterranean spotted fever
Mediterranean spotted fever6
Chikungunya
Chikungunya32
EndocarditisEndocarditis
Endocarditis38
Multicentric reticulohistiocytosisMulticentric reticulohistiocytosis
Multicentric reticulohistiocytosis29
CANDLE syndrome
CANDLE syndrome1
Crimean-Congo hemorrhagic fever
Crimean-Congo hemorrhagic fever4
Acute lymphoid leukemiaAcute lymphoid leukemia
Acute lymphoid leukemia1
Disseminated gonorrheaDisseminated gonorrhea
Disseminated gonorrhea49
Multiple myelomaMultiple myeloma
Multiple myeloma45
Polymyalgia rheumatica
Polymyalgia rheumatica2
SmallpoxSmallpox
Smallpox7
Subcorneal pustular dermatosisSubcorneal pustular dermatosis
Subcorneal pustular dermatosis21
Kawasaki diseaseKawasaki disease
Kawasaki disease13
Osteomyelitis
Osteomyelitis42
SarcoidosisSarcoidosis
Sarcoidosis245
BrucellosisBrucellosis
Brucellosis4
CoccidioidomycosisCoccidioidomycosis
Coccidioidomycosis99