Differential Diagnosis
DDx Strength: None
Blanching macule, Fever, 50-59 year old Female Add or remove findings

Differential too broad. Edit Findings to refine your results.

Viral exanthem

2/2
Viral exanthemViral exanthem
1Viral exanthem29

Exanthematous drug eruption

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

Mycoplasma exanthem

2/2
Mycoplasma exanthemMycoplasma exanthem
2Mycoplasma exanthem7

Rocky Mountain spotted fever

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

Streptococcal pharyngitis

2/2
Streptococcal pharyngitisStreptococcal pharyngitis
2Streptococcal pharyngitis7

Pediculosis corporis

2/2
Pediculosis corporisPediculosis corporis
2Pediculosis corporis24

Sjögren syndrome

2/2
Sjögren syndromeSjögren syndrome
2Sjögren syndrome14

Adult-onset Still disease

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

Cat flea rickettsiosis

2/2
Cat flea rickettsiosis
3Cat flea rickettsiosis1

Abrin poisoning

2/2
Abrin poisoning
3Abrin poisoning3

African tick bite fever

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

African trypanosomiasis

2/2
African trypanosomiasis
3African trypanosomiasis5

Atypical measles

2/2
Atypical measlesAtypical measles
3Atypical measles9

Bowel-bypass syndrome

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

Chikungunya

2/2
Chikungunya
3Chikungunya32

Colorado tick fever

2/2
Colorado tick feverColorado tick fever
3Colorado tick fever3

Cutaneous eruption of lymphocyte recovery

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

Cytomegalovirus infection

2/2
Cytomegalovirus infectionCytomegalovirus infection
3Cytomegalovirus infection19

Dengue fever

2/2
Dengue feverDengue fever
3Dengue fever18

Drug-induced hypersensitivity syndrome

2/2
Drug-induced hypersensitivity syndromeDrug-induced hypersensitivity syndrome
3Drug-induced hypersensitivity syndrome32

Endemic typhus

2/2
Endemic typhus
3Endemic typhus1

Enteroviral infection

2/2
Enteroviral infectionEnteroviral infection
3Enteroviral infection8

Epidemic typhus

2/2
Epidemic typhus
3Epidemic typhus2

Human Anaplasmataceae infection

2/2
Human Anaplasmataceae infectionHuman Anaplasmataceae infection
3Human Anaplasmataceae infection10

Human immunodeficiency virus primary infection

2/2
Human immunodeficiency virus primary infectionHuman immunodeficiency virus primary infection
3Human immunodeficiency virus primary infection9

Kikuchi-Fujimoto disease

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

Leptospirosis

2/2
LeptospirosisLeptospirosis
3Leptospirosis15

Mediterranean spotted fever

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

Mononucleosis

2/2
MononucleosisMononucleosis
3Mononucleosis14

Psittacosis

2/2
Psittacosis
3Psittacosis2

Rubeola

2/2
RubeolaRubeola
3Rubeola28

Salmonellosis

2/2
Salmonellosis
3Salmonellosis1

Scrub typhus

2/2
Scrub typhusScrub typhus
3Scrub typhus5

Serum sickness

2/2
Serum sicknessSerum sickness
3Serum sickness31

Southern tick-associated rash illness

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

Streptobacillus moniliformis rat-bite fever

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

Typhoid fever

2/2
Typhoid feverTyphoid fever
3Typhoid fever5

West Nile virus

2/2
West Nile virusWest Nile virus
3West Nile virus8

Arcanobacterium haemolyticum pharyngitis

2/2
Arcanobacterium haemolyticum pharyngitis
3Arcanobacterium haemolyticum pharyngitis1

Cat-scratch disease

2/2
Cat-scratch diseaseCat-scratch disease
3Cat-scratch disease30

Queensland tick typhus

2/2
Queensland tick typhusQueensland tick typhus
3Queensland tick typhus2

Secondary syphilis

2/2
Secondary syphilisSecondary syphilis
3Secondary syphilis237

Stevens-Johnson syndrome

2/2
Stevens-Johnson syndromeStevens-Johnson syndrome
3Stevens-Johnson syndrome86

Paecilomyces lilacinus infection

2/2
Paecilomyces lilacinus infectionPaecilomyces lilacinus infection
4Paecilomyces lilacinus infection6

Trench fever

2/2
Trench fever
4Trench fever2

Engraftment syndrome

2/2
Engraftment syndrome
4Engraftment syndrome6

Eosinophilia-myalgia syndrome

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

Japanese spotted fever

2/2
Japanese spotted feverJapanese spotted fever
4Japanese spotted fever4

Q fever

2/2
Q fever
4Q fever14

Rubella

2/2
RubellaRubella
4Rubella22

Schnitzler syndrome

2/2
Schnitzler syndrome
4Schnitzler syndrome2

Sindbis

2/2
Sindbis
4Sindbis1

Spirillum minus rat-bite fever

2/2
Spirillum minus rat-bite fever
4Spirillum minus rat-bite fever1

Tick-borne lymphadenopathy

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

Trichinellosis

2/2
TrichinellosisTrichinellosis
4Trichinellosis10

Type 1 lepra reaction

2/2
Type 1 lepra reactionType 1 lepra reaction
4Type 1 lepra reaction3

Zika virus infection

2/2
Zika virus infectionZika virus infection
4Zika virus infection7

Baylisascariasis

2/2
Baylisascariasis
4Baylisascariasis1

Palmar-plantar eccrine hidradenitis

2/2
Palmar-plantar eccrine hidradenitisPalmar-plantar eccrine hidradenitis
4Palmar-plantar eccrine hidradenitis7

Toxoplasmosis

2/2
ToxoplasmosisToxoplasmosis
4Toxoplasmosis8

Marburg filoviridae virus infection

2/2
Marburg filoviridae virus infection
5Marburg filoviridae virus infection5

Bourbon virus disease

2/2
Bourbon virus disease
5Bourbon virus disease1

Cryopyrin-associated periodic syndromes

2/2
Cryopyrin-associated periodic syndromes
5Cryopyrin-associated periodic syndromes3

Hemophagocytic lymphohistiocytosis

2/2
Hemophagocytic lymphohistiocytosisHemophagocytic lymphohistiocytosis
5Hemophagocytic lymphohistiocytosis1

TNF receptor-associated periodic syndrome

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

Hydroa vacciniforme

2/2
Hydroa vacciniformeHydroa vacciniforme
5Hydroa vacciniforme4

Unilateral laterothoracic exanthem of childhood

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

Spider angioma

1/2
Spider angiomaSpider angioma
1Spider angioma17

Venous lake

1/2
Venous lakeVenous lake
1Venous lake23

Arthropod bite or sting

1/2
Arthropod bite or stingArthropod bite or sting
1Arthropod bite or sting75

Flea bite

1/2
Flea biteFlea bite
1Flea bite16

Irritant contact dermatitis

1/2
Irritant contact dermatitisIrritant contact dermatitis
1Irritant contact dermatitis24

Perioral dermatitis

1/2
Perioral dermatitisPerioral dermatitis
1Perioral dermatitis33

Rosacea

1/2
RosaceaRosacea
1Rosacea72

Hereditary hemorrhagic telangiectasia

1/2
Hereditary hemorrhagic telangiectasiaHereditary hemorrhagic telangiectasia
2Hereditary hemorrhagic telangiectasia52

Cholinergic urticaria

1/2
Cholinergic urticariaCholinergic urticaria
2Cholinergic urticaria12

Baboon syndrome

1/2
Baboon syndromeBaboon syndrome
3Baboon syndrome2

Cercarial dermatitis

1/2
Cercarial dermatitisCercarial dermatitis
3Cercarial dermatitis6

Chilblains

1/2
ChilblainsChilblains
3Chilblains24

Generalized essential telangiectasia

1/2
Generalized essential telangiectasiaGeneralized essential telangiectasia
3Generalized essential telangiectasia13

Microvenular hemangioma

1/2
Microvenular hemangiomaMicrovenular hemangioma
3Microvenular hemangioma4

Mite dermatitis

1/2
Mite dermatitisMite dermatitis
3Mite dermatitis17

Symmetric drug-related intertriginous and flexural exanthema

1/2
Symmetric drug-related intertriginous and flexural exanthema
3Symmetric drug-related intertriginous and flexural exanthema9

Bier spots

1/2
Bier spots
4Bier spots3

Cutaneous extramedullary hematopoiesis

1/2
Cutaneous extramedullary hematopoiesisCutaneous extramedullary hematopoiesis
4Cutaneous extramedullary hematopoiesis6

Equestrian perniosis

1/2
Equestrian perniosis
4Equestrian perniosis3

Intralymphatic histiocytosis

1/2
Intralymphatic histiocytosis
4Intralymphatic histiocytosis2

Macular lymphocytic arteritis

1/2
Macular lymphocytic arteritis
4Macular lymphocytic arteritis1

Malignant atrophic papulosis

1/2
Malignant atrophic papulosisMalignant atrophic papulosis
4Malignant atrophic papulosis10

Parkes-Weber syndrome

1/2
Parkes-Weber syndrome
4Parkes-Weber syndrome4

Reticular erythematous mucinosis

1/2
Reticular erythematous mucinosisReticular erythematous mucinosis
4Reticular erythematous mucinosis8

Vaccinia-induced erythema multiforme

1/2
Vaccinia-induced erythema multiformeVaccinia-induced erythema multiforme
4Vaccinia-induced erythema multiforme13

Cutaneous collagenous vasculopathy

1/2
Cutaneous collagenous vasculopathy
5Cutaneous collagenous vasculopathy1

Palmar erythema

1/2
Palmar erythemaPalmar erythema
5Palmar erythema9

Unilateral nevoid telangiectasias

1/2
Unilateral nevoid telangiectasiasUnilateral nevoid telangiectasias
5Unilateral nevoid telangiectasias15

Adenopathy and extensive skin patch overlying a plasmacytoma syndrome

1/2
Adenopathy and extensive skin patch overlying a plasmacytoma syndrome
5Adenopathy and extensive skin patch overlying a plasmacytoma syndrome8

Annular lichenoid dermatitis of youth

1/2
Annular lichenoid dermatitis of youth
5Annular lichenoid dermatitis of youth1