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

Differential too broad. Edit Findings to refine your results.

Viral exanthem

3/3
Viral exanthemViral exanthem
1Viral exanthem29

Rocky Mountain spotted fever

3/3
Rocky Mountain spotted feverRocky Mountain spotted fever
2Rocky Mountain spotted fever34

Dengue fever

3/3
Dengue feverDengue fever
3Dengue fever18

Cat flea rickettsiosis

3/3
Cat flea rickettsiosis
3Cat flea rickettsiosis1

Cat-scratch disease

3/3
Cat-scratch diseaseCat-scratch disease
3Cat-scratch disease30

Chikungunya

3/3
Chikungunya
3Chikungunya32

Colorado tick fever

3/3
Colorado tick feverColorado tick fever
3Colorado tick fever3

Drug-induced hypersensitivity syndrome

3/3
Drug-induced hypersensitivity syndromeDrug-induced hypersensitivity syndrome
3Drug-induced hypersensitivity syndrome32

Endemic typhus

3/3
Endemic typhus
3Endemic typhus1

Human Anaplasmataceae infection

3/3
Human Anaplasmataceae infectionHuman Anaplasmataceae infection
3Human Anaplasmataceae infection10

Human immunodeficiency virus primary infection

3/3
Human immunodeficiency virus primary infectionHuman immunodeficiency virus primary infection
3Human immunodeficiency virus primary infection9

Secondary syphilis

3/3
Secondary syphilisSecondary syphilis
3Secondary syphilis237

Serum sickness

3/3
Serum sicknessSerum sickness
3Serum sickness31

Stevens-Johnson syndrome

3/3
Stevens-Johnson syndromeStevens-Johnson syndrome
3Stevens-Johnson syndrome86

West Nile virus

3/3
West Nile virusWest Nile virus
3West Nile virus8

Epidemic typhus

3/3
Epidemic typhus
3Epidemic typhus2

Mononucleosis

3/3
MononucleosisMononucleosis
3Mononucleosis14

Zika virus infection

3/3
Zika virus infectionZika virus infection
4Zika virus infection7

Rubella

3/3
RubellaRubella
4Rubella22

Spirillum minus rat-bite fever

3/3
Spirillum minus rat-bite fever
4Spirillum minus rat-bite fever1

Cryopyrin-associated periodic syndromes

3/3
Cryopyrin-associated periodic syndromes
5Cryopyrin-associated periodic syndromes3

Marburg filoviridae virus infection

3/3
Marburg filoviridae virus infection
5Marburg filoviridae virus infection5

Exanthematous drug eruption

2/3
Exanthematous drug eruptionExanthematous drug eruption
1Exanthematous drug eruption48

Sjögren syndrome

2/3
Sjögren syndromeSjögren syndrome
2Sjögren syndrome14

Pediculosis corporis

2/3
Pediculosis corporisPediculosis corporis
2Pediculosis corporis24

Adult-onset Still disease

2/3
Adult-onset Still diseaseAdult-onset Still disease
3Adult-onset Still disease12

African trypanosomiasis

2/3
African trypanosomiasis
3African trypanosomiasis5

Bowel-bypass syndrome

2/3
Bowel-bypass syndromeBowel-bypass syndrome
3Bowel-bypass syndrome15

Mediterranean spotted fever

2/3
Mediterranean spotted feverMediterranean spotted fever
3Mediterranean spotted fever6

Rubeola

2/3
RubeolaRubeola
3Rubeola28

Southern tick-associated rash illness

2/3
Southern tick-associated rash illnessSouthern tick-associated rash illness
3Southern tick-associated rash illness8

Streptobacillus moniliformis rat-bite fever

2/3
Streptobacillus moniliformis rat-bite feverStreptobacillus moniliformis rat-bite fever
3Streptobacillus moniliformis rat-bite fever10

African tick bite fever

2/3
African tick bite fever
3African tick bite fever2

Arcanobacterium haemolyticum pharyngitis

2/3
Arcanobacterium haemolyticum pharyngitis
3Arcanobacterium haemolyticum pharyngitis1

Atypical measles

2/3
Atypical measlesAtypical measles
3Atypical measles9

Cutaneous eruption of lymphocyte recovery

2/3
Cutaneous eruption of lymphocyte recovery
3Cutaneous eruption of lymphocyte recovery1

Enteroviral infection

2/3
Enteroviral infectionEnteroviral infection
3Enteroviral infection8

Generalized essential telangiectasia

2/3
Generalized essential telangiectasiaGeneralized essential telangiectasia
3Generalized essential telangiectasia13

Kikuchi-Fujimoto disease

2/3
Kikuchi-Fujimoto diseaseKikuchi-Fujimoto disease
3Kikuchi-Fujimoto disease2

Leptospirosis

2/3
LeptospirosisLeptospirosis
3Leptospirosis15

Microvenular hemangioma

2/3
Microvenular hemangiomaMicrovenular hemangioma
3Microvenular hemangioma4

Psittacosis

2/3
Psittacosis
3Psittacosis2

Scrub typhus

2/3
Scrub typhusScrub typhus
3Scrub typhus5

Symmetric drug-related intertriginous and flexural exanthema

2/3
Symmetric drug-related intertriginous and flexural exanthema
3Symmetric drug-related intertriginous and flexural exanthema9

Typhoid fever

2/3
Typhoid feverTyphoid fever
3Typhoid fever5

Trench fever

2/3
Trench fever
4Trench fever2

Schnitzler syndrome

2/3
Schnitzler syndrome
4Schnitzler syndrome2

Sindbis

2/3
Sindbis
4Sindbis1

Tick-borne lymphadenopathy

2/3
Tick-borne lymphadenopathy
4Tick-borne lymphadenopathy1

Vaccinia-induced erythema multiforme

2/3
Vaccinia-induced erythema multiformeVaccinia-induced erythema multiforme
4Vaccinia-induced erythema multiforme13

Cutaneous extramedullary hematopoiesis

2/3
Cutaneous extramedullary hematopoiesisCutaneous extramedullary hematopoiesis
4Cutaneous extramedullary hematopoiesis6

Engraftment syndrome

2/3
Engraftment syndrome
4Engraftment syndrome6

Eosinophilia-myalgia syndrome

2/3
Eosinophilia-myalgia syndrome
4Eosinophilia-myalgia syndrome1

Trichinellosis

2/3
TrichinellosisTrichinellosis
4Trichinellosis10

Cutaneous collagenous vasculopathy

2/3
Cutaneous collagenous vasculopathy
5Cutaneous collagenous vasculopathy1

TNF receptor-associated periodic syndrome

2/3
TNF receptor-associated periodic syndromeTNF receptor-associated periodic syndrome
5TNF receptor-associated periodic syndrome2

Bourbon virus disease

2/3
Bourbon virus disease
5Bourbon virus disease1

Hemophagocytic lymphohistiocytosis

2/3
Hemophagocytic lymphohistiocytosisHemophagocytic lymphohistiocytosis
5Hemophagocytic lymphohistiocytosis14

Unilateral laterothoracic exanthem of childhood

2/3
Unilateral laterothoracic exanthem of childhoodUnilateral laterothoracic exanthem of childhood
5Unilateral laterothoracic exanthem of childhood15