Differential Diagnosis
DDx Strength: Moderate
Blanching macule, Widespread distribution, Arthralgia, Haiti, 50-59 year old Female

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Dengue fever

Dengue feverDengue fever

Chikungunya

Chikungunya

Zika virus infection

Zika virus infectionZika virus infection

Human immunodeficiency virus primary infection

Human immunodeficiency virus primary infectionHuman immunodeficiency virus primary infection

Drug-induced hypersensitivity syndrome

Drug-induced hypersensitivity syndromeDrug-induced hypersensitivity syndrome

Mononucleosis

MononucleosisMononucleosis

Serum sickness

Serum sicknessSerum sickness

Viral exanthem

Viral exanthemViral exanthem

Rubella

RubellaRubella

Rocky Mountain spotted fever

Rocky Mountain spotted feverRocky Mountain spotted fever

Human Anaplasmataceae infection

Human Anaplasmataceae infectionHuman Anaplasmataceae infection

Secondary syphilis

Secondary syphilisSecondary syphilis

West Nile virus

West Nile virusWest Nile virus

Stevens-Johnson syndrome

Stevens-Johnson syndromeStevens-Johnson syndrome

Exanthematous drug eruption

Exanthematous drug eruptionExanthematous drug eruption

Epidemic typhus

Epidemic typhus

Marburg filoviridae virus infection

Marburg filoviridae virus infection

Measles

MeaslesMeasles

Enteroviral infection

Enteroviral infectionEnteroviral infection

Endemic typhus

Endemic typhus

Leptospirosis

LeptospirosisLeptospirosis

Psittacosis

Psittacosis

Typhoid fever

Typhoid feverTyphoid fever

Cat flea rickettsiosis

Cat flea rickettsiosis

Spirillum minus rat-bite fever

Spirillum minus rat-bite fever

Cryopyrin-associated periodic syndromes

Cryopyrin-associated periodic syndromes

Cat-scratch disease

Cat-scratch disease

Colorado tick fever

Colorado tick feverColorado tick fever

Adult-onset Still disease

Adult-onset Still diseaseAdult-onset Still disease

Bowel-associated dermatosis-arthritis syndrome

Bowel-associated dermatosis-arthritis syndromeBowel-associated dermatosis-arthritis syndrome

Generalized essential telangiectasia

Generalized essential telangiectasiaGeneralized essential telangiectasia

Atypical measles

Atypical measlesAtypical measles

Scrub typhus

Scrub typhusScrub typhus

Hand, foot, and mouth disease

Hand, foot, and mouth diseaseHand, foot, and mouth disease

Hemophagocytic lymphohistiocytosis

Hemophagocytic lymphohistiocytosisHemophagocytic lymphohistiocytosis

Mycoplasma exanthem

Mycoplasma exanthemMycoplasma exanthem

Sjögren syndrome

Sjögren syndromeSjögren syndrome

Pediculosis corporis

Pediculosis corporisPediculosis corporis

African trypanosomiasis

African trypanosomiasis

Cryoglobulinemia

CryoglobulinemiaCryoglobulinemia

Kikuchi-Fujimoto disease

Kikuchi-Fujimoto diseaseKikuchi-Fujimoto disease

Southern tick-associated rash illness

Southern tick-associated rash illnessSouthern tick-associated rash illness

Streptobacillus moniliformis rat-bite fever

Streptobacillus moniliformis rat-bite feverStreptobacillus moniliformis rat-bite fever

African tick bite fever

African tick bite fever

Cercarial dermatitis

Cercarial dermatitisCercarial dermatitis

Cutaneous eruption of lymphocyte recovery

Cutaneous eruption of lymphocyte recovery

Dermatomyositis

DermatomyositisDermatomyositis

Microvenular hemangioma

Microvenular hemangiomaMicrovenular hemangioma

Symmetric drug-related intertriginous and flexural exanthema

Symmetric drug-related intertriginous and flexural exanthema

Trench fever

Trench fever

Schnitzler syndrome

Schnitzler syndrome

Sindbis

Sindbis

Tick-borne lymphadenopathy

Tick-borne lymphadenopathy

Vaccinia-induced erythema multiforme

Vaccinia-induced erythema multiformeVaccinia-induced erythema multiforme

Engraftment syndrome

Engraftment syndrome

Eosinophilia-myalgia syndrome

Eosinophilia-myalgia syndrome

Kawasaki disease

Kawasaki diseaseKawasaki disease

Trichinellosis

TrichinellosisTrichinellosis

Cutaneous collagenous vasculopathy

Cutaneous collagenous vasculopathy

TNF receptor-associated periodic syndrome

TNF receptor-associated periodic syndromeTNF receptor-associated periodic syndrome