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

Differential too broad. Edit Findings to refine your results.

Exanthematous drug eruption

2/2
Exanthematous drug eruptionExanthematous drug eruption

Viral exanthem

2/2
Viral exanthemViral exanthem

Pediculosis corporis

2/2
Pediculosis corporisPediculosis corporis

Rocky Mountain spotted fever

2/2
Rocky Mountain spotted feverRocky Mountain spotted fever

Cat flea rickettsiosis

2/2
Cat flea rickettsiosis

Chikungunya

2/2
Chikungunya

Dengue fever

2/2
Dengue feverDengue fever

Drug-induced hypersensitivity syndrome

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Drug-induced hypersensitivity syndromeDrug-induced hypersensitivity syndrome

Human immunodeficiency virus primary infection

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

Rubeola

2/2
RubeolaRubeola

Serum sickness

2/2
Serum sicknessSerum sickness

Stevens-Johnson syndrome

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Stevens-Johnson syndromeStevens-Johnson syndrome

African tick bite fever

2/2
African tick bite fever

Atypical measles

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Atypical measlesAtypical measles

Cat-scratch disease

2/2
Cat-scratch diseaseCat-scratch disease

Colorado tick fever

2/2
Colorado tick feverColorado tick fever

Cutaneous eruption of lymphocyte recovery

2/2
Cutaneous eruption of lymphocyte recovery

Endemic typhus

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Endemic typhus

Enteroviral infection

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Enteroviral infectionEnteroviral infection

Epidemic typhus

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Epidemic typhus

Generalized essential telangiectasia

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Generalized essential telangiectasiaGeneralized essential telangiectasia

Human Anaplasmataceae infection

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Human Anaplasmataceae infectionHuman Anaplasmataceae infection

Microvenular hemangioma

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Microvenular hemangiomaMicrovenular hemangioma

Mononucleosis

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MononucleosisMononucleosis

Scrub typhus

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Scrub typhusScrub typhus

Secondary syphilis

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Secondary syphilisSecondary syphilis

Symmetric drug-related intertriginous and flexural exanthema

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Symmetric drug-related intertriginous and flexural exanthema

West Nile virus

2/2
West Nile virusWest Nile virus

Rubella

2/2
RubellaRubella

Vaccinia-induced erythema multiforme

2/2
Vaccinia-induced erythema multiformeVaccinia-induced erythema multiforme

Zika virus infection

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Zika virus infectionZika virus infection

Cutaneous extramedullary hematopoiesis

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Cutaneous extramedullary hematopoiesisCutaneous extramedullary hematopoiesis

Engraftment syndrome

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Engraftment syndrome

Spirillum minus rat-bite fever

2/2
Spirillum minus rat-bite fever

Cutaneous collagenous vasculopathy

2/2
Cutaneous collagenous vasculopathy

Marburg filoviridae virus infection

2/2
Marburg filoviridae virus infection

Cryopyrin-associated periodic syndromes

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Cryopyrin-associated periodic syndromes

Hemophagocytic lymphohistiocytosis

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Hemophagocytic lymphohistiocytosisHemophagocytic lymphohistiocytosis

Unilateral laterothoracic exanthem of childhood

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Unilateral laterothoracic exanthem of childhoodUnilateral laterothoracic exanthem of childhood

Spider angioma

1/2
Spider angiomaSpider angioma

Venous lake

1/2
Venous lakeVenous lake

Arthropod bite or sting

1/2
Arthropod bite or stingArthropod bite or sting

Flea bite

1/2
Flea biteFlea bite

Hereditary hemorrhagic telangiectasia

1/2
Hereditary hemorrhagic telangiectasiaHereditary hemorrhagic telangiectasia

Mycoplasma exanthem

1/2
Mycoplasma exanthemMycoplasma exanthem

Cholinergic urticaria

1/2
Cholinergic urticariaCholinergic urticaria

Sjögren syndrome

1/2
Sjögren syndromeSjögren syndrome

Streptococcal pharyngitis

1/2
Streptococcal pharyngitisStreptococcal pharyngitis

Adult-onset Still disease

1/2
Adult-onset Still diseaseAdult-onset Still disease

Bowel-bypass syndrome

1/2
Bowel-bypass syndromeBowel-bypass syndrome

Abrin poisoning

1/2
Abrin poisoning

African trypanosomiasis

1/2
African trypanosomiasis

Arcanobacterium haemolyticum pharyngitis

1/2
Arcanobacterium haemolyticum pharyngitis

Baboon syndrome

1/2
Baboon syndromeBaboon syndrome

Cercarial dermatitis

1/2
Cercarial dermatitisCercarial dermatitis

Chilblains

1/2
ChilblainsChilblains

Cytomegalovirus infection

1/2
Cytomegalovirus infectionCytomegalovirus infection

Kikuchi-Fujimoto disease

1/2
Kikuchi-Fujimoto diseaseKikuchi-Fujimoto disease

Leptospirosis

1/2
LeptospirosisLeptospirosis

Mediterranean spotted fever

1/2
Mediterranean spotted feverMediterranean spotted fever

Mite dermatitis

1/2
Mite dermatitisMite dermatitis

Psittacosis

1/2
Psittacosis

Queensland tick typhus

1/2
Queensland tick typhusQueensland tick typhus

Salmonellosis

1/2
Salmonellosis

Southern tick-associated rash illness

1/2
Southern tick-associated rash illnessSouthern tick-associated rash illness

Streptobacillus moniliformis rat-bite fever

1/2
Streptobacillus moniliformis rat-bite feverStreptobacillus moniliformis rat-bite fever

Typhoid fever

1/2
Typhoid feverTyphoid fever

Paecilomyces lilacinus infection

1/2
Paecilomyces lilacinus infectionPaecilomyces lilacinus infection

Trench fever

1/2
Trench fever

Baylisascariasis

1/2
Baylisascariasis

Bier spots

1/2
Bier spots

Eosinophilia-myalgia syndrome

1/2
Eosinophilia-myalgia syndrome

Equestrian perniosis

1/2
Equestrian perniosis

Intralymphatic histiocytosis

1/2
Intralymphatic histiocytosis

Japanese spotted fever

1/2
Japanese spotted feverJapanese spotted fever

Macular lymphocytic arteritis

1/2
Macular lymphocytic arteritis

Malignant atrophic papulosis

1/2
Malignant atrophic papulosisMalignant atrophic papulosis

Palmar-plantar eccrine hidradenitis

1/2
Palmar-plantar eccrine hidradenitisPalmar-plantar eccrine hidradenitis

Parkes-Weber syndrome

1/2
Parkes-Weber syndrome

Q fever

1/2
Q fever

Reticular erythematous mucinosis

1/2
Reticular erythematous mucinosisReticular erythematous mucinosis

Schnitzler syndrome

1/2
Schnitzler syndrome

Sindbis

1/2
Sindbis

Tick-borne lymphadenopathy

1/2
Tick-borne lymphadenopathy

Toxoplasmosis

1/2
ToxoplasmosisToxoplasmosis

Trichinellosis

1/2
TrichinellosisTrichinellosis

Type 1 lepra reaction

1/2
Type 1 lepra reactionType 1 lepra reaction

Palmar erythema

1/2
Palmar erythemaPalmar erythema

Unilateral nevoid telangiectasias

1/2
Unilateral nevoid telangiectasiasUnilateral nevoid telangiectasias

Adenopathy and extensive skin patch overlying a plasmacytoma syndrome

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

Annular lichenoid dermatitis of youth

1/2
Annular lichenoid dermatitis of youth

Bourbon virus disease

1/2
Bourbon virus disease

Hydroa vacciniforme

1/2
Hydroa vacciniformeHydroa vacciniforme

TNF receptor-associated periodic syndrome

1/2
TNF receptor-associated periodic syndromeTNF receptor-associated periodic syndrome