Differential Diagnosis
DDx Strength: Excellent
Blanching macule, Widespread, Arthralgia, 50-59 year old Female Add or remove findings

Best Match is in Consider 2nd

Human immunodeficiency virus primary infection

Human immunodeficiency virus primary infectionHuman immunodeficiency virus primary infection
Human immunodeficiency virus primary infection9

Drug-induced hypersensitivity syndrome

Drug-induced hypersensitivity syndromeDrug-induced hypersensitivity syndrome
Drug-induced hypersensitivity syndrome27

Mononucleosis

MononucleosisMononucleosis
Mononucleosis14

Dengue fever

Dengue feverDengue fever
Dengue fever18

Chikungunya

Chikungunya
Chikungunya32

Serum sickness

Serum sicknessSerum sickness
Serum sickness31

Viral exanthem

Viral exanthemViral exanthem
Viral exanthem26

Zika virus infection

Zika virus infectionZika virus infection
Zika virus infection7

Rubella

RubellaRubella
Rubella22

Rocky Mountain spotted fever

Rocky Mountain spotted feverRocky Mountain spotted fever
Rocky Mountain spotted fever35

Human Anaplasmataceae infection

Human Anaplasmataceae infectionHuman Anaplasmataceae infection
Human Anaplasmataceae infection10

Secondary syphilis

Secondary syphilisSecondary syphilis
Secondary syphilis230

Stevens-Johnson syndrome

Stevens-Johnson syndromeStevens-Johnson syndrome
Stevens-Johnson syndrome88

West Nile virus

West Nile virusWest Nile virus
West Nile virus8

Exanthematous drug eruption

Exanthematous drug eruptionExanthematous drug eruption
Exanthematous drug eruption48

Epidemic typhus

Epidemic typhus
Epidemic typhus2

Marburg filoviridae virus infection

Marburg filoviridae virus infection
Marburg filoviridae virus infection5

Measles

MeaslesMeasles
Measles26

Enteroviral infection

Enteroviral infectionEnteroviral infection
Enteroviral infection8

Endemic typhus

Endemic typhus
Endemic typhus1

Cat flea rickettsiosis

Cat flea rickettsiosis
Cat flea rickettsiosis1

Spirillum minus rat-bite fever

Spirillum minus rat-bite fever
Spirillum minus rat-bite fever1

Cryopyrin-associated periodic syndromes

Cryopyrin-associated periodic syndromes
Cryopyrin-associated periodic syndromes3

Cat-scratch disease

Cat-scratch diseaseCat-scratch disease
Cat-scratch disease30

Colorado tick fever

Colorado tick feverColorado tick fever
Colorado tick fever3

Adult-onset Still disease

Adult-onset Still diseaseAdult-onset Still disease
Adult-onset Still disease12

Bowel-associated dermatosis-arthritis syndrome

Bowel-associated dermatosis-arthritis syndromeBowel-associated dermatosis-arthritis syndrome
Bowel-associated dermatosis-arthritis syndrome18

Atypical measles

Atypical measlesAtypical measles
Atypical measles9

Generalized essential telangiectasia

Generalized essential telangiectasiaGeneralized essential telangiectasia
Generalized essential telangiectasia13

Scrub typhus

Scrub typhusScrub typhus
Scrub typhus5

Hand, foot, and mouth disease

Hand, foot, and mouth diseaseHand, foot, and mouth disease
Hand, foot, and mouth disease43

Hemophagocytic lymphohistiocytosis

Hemophagocytic lymphohistiocytosisHemophagocytic lymphohistiocytosis
Hemophagocytic lymphohistiocytosis1

Sjögren syndrome

Sjögren syndromeSjögren syndrome
Sjögren syndrome14

Pediculosis corporis

Pediculosis corporisPediculosis corporis
Pediculosis corporis24

African trypanosomiasis

African trypanosomiasis
African trypanosomiasis5

Southern tick-associated rash illness

Southern tick-associated rash illnessSouthern tick-associated rash illness
Southern tick-associated rash illness8

Streptobacillus moniliformis rat-bite fever

Streptobacillus moniliformis rat-bite feverStreptobacillus moniliformis rat-bite fever
Streptobacillus moniliformis rat-bite fever10

African tick bite fever

African tick bite fever
African tick bite fever2

Cercarial dermatitis

Cercarial dermatitisCercarial dermatitis
Cercarial dermatitis6

Cutaneous eruption of lymphocyte recovery

Cutaneous eruption of lymphocyte recovery
Cutaneous eruption of lymphocyte recovery1

Kikuchi-Fujimoto disease

Kikuchi-Fujimoto diseaseKikuchi-Fujimoto disease
Kikuchi-Fujimoto disease2

Leptospirosis

LeptospirosisLeptospirosis
Leptospirosis15

Microvenular hemangioma

Microvenular hemangiomaMicrovenular hemangioma
Microvenular hemangioma4

Psittacosis

Psittacosis
Psittacosis2

Symmetric drug-related intertriginous and flexural exanthema

Symmetric drug-related intertriginous and flexural exanthema
Symmetric drug-related intertriginous and flexural exanthema9

Typhoid fever

Typhoid feverTyphoid fever
Typhoid fever5

Trench fever

Trench fever
Trench fever2

Schnitzler syndrome

Schnitzler syndrome
Schnitzler syndrome9

Sindbis

Sindbis
Sindbis1

Tick-borne lymphadenopathy

Tick-borne lymphadenopathy
Tick-borne lymphadenopathy1

Vaccinia-induced erythema multiforme

Vaccinia-induced erythema multiformeVaccinia-induced erythema multiforme
Vaccinia-induced erythema multiforme13

Engraftment syndrome

Engraftment syndrome
Engraftment syndrome6

Eosinophilia-myalgia syndrome

Eosinophilia-myalgia syndrome
Eosinophilia-myalgia syndrome1

Kawasaki disease

Kawasaki diseaseKawasaki disease
Kawasaki disease1

Trichinellosis

TrichinellosisTrichinellosis
Trichinellosis10

Cutaneous collagenous vasculopathy

Cutaneous collagenous vasculopathy
Cutaneous collagenous vasculopathy1

TNF receptor-associated periodic syndrome

TNF receptor-associated periodic syndromeTNF receptor-associated periodic syndrome
TNF receptor-associated periodic syndrome2

Bourbon virus disease

Bourbon virus disease
Bourbon virus disease1

Mediterranean spotted fever

Mediterranean spotted feverMediterranean spotted fever
Mediterranean spotted fever6

Arcanobacterium haemolyticum pharyngitis

Arcanobacterium haemolyticum pharyngitis
Arcanobacterium haemolyticum pharyngitis1