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DDx Strength: Moderate
Rash or multiple lesions, Erythema/erythroderma, Upper arm, Wheal, Spiking fever, Arthralgia, Sore throat, 20-29 year old Female

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Adult onset Still diseaseAdult onset Still disease
Adult onset Still disease12
Serum sicknessSerum sickness
Serum sickness31
Erythema infectiosumErythema infectiosum
Erythema infectiosum35
Skin and oral mucosal manifestations of COVID-19
Skin and oral mucosal manifestations of COVID-1957
Drug-induced hypersensitivity syndromeDrug-induced hypersensitivity syndrome
Drug-induced hypersensitivity syndrome27
Chikungunya
Chikungunya32
Lyme diseaseLyme disease
Lyme disease74
Kawasaki diseaseKawasaki disease
Kawasaki disease13
Human immunodeficiency virus disease
Human immunodeficiency virus disease1
Systemic lupus erythematosusSystemic lupus erythematosus
Systemic lupus erythematosus153
Arthropod bite or stingArthropod bite or sting
Arthropod bite or sting78
UrticariaUrticaria
Urticaria81
Viral exanthemViral exanthem
Viral exanthem34
Q fever
Q fever16
DermatomyositisDermatomyositis
Dermatomyositis168
Post-COVID conditions
Post-COVID conditions3
Arcanobacterium haemolyticum pharyngitis
Arcanobacterium haemolyticum pharyngitis1
Erythema multiformeErythema multiforme
Erythema multiforme120
Dengue feverDengue fever
Dengue fever21
African trypanosomiasis
African trypanosomiasis5
Kikuchi-Fujimoto diseaseKikuchi-Fujimoto disease
Kikuchi-Fujimoto disease2
Psittacosis
Psittacosis2
RubellaRubella
Rubella22
Multisystem inflammatory syndrome in children
Multisystem inflammatory syndrome in children29
Herpes zosterHerpes zoster
Herpes zoster167
Human immunodeficiency virus primary infectionHuman immunodeficiency virus primary infection
Human immunodeficiency virus primary infection9
CoccidioidomycosisCoccidioidomycosis
Coccidioidomycosis99
Disseminated candidiasisDisseminated candidiasis
Disseminated candidiasis24
Schnitzler syndrome
Schnitzler syndrome9
Erythema marginatumErythema marginatum
Erythema marginatum9
Spirillum minus rat-bite fever
Spirillum minus rat-bite fever1
Serum sickness-like reactionSerum sickness-like reaction
Serum sickness-like reaction1
Alpha-gal syndrome
Alpha-gal syndrome2
Disseminated herpes zoster
Disseminated herpes zoster28
Physical urticaria
Physical urticaria8
Drug-induced lupus erythematosus
Drug-induced lupus erythematosus4
PsoriasisPsoriasis
Psoriasis245
Mastocytosis in adultsMastocytosis in adults
Mastocytosis in adults34
Contact urticaria
Contact urticaria16
Zika virus infectionZika virus infection
Zika virus infection7
MononucleosisMononucleosis
Mononucleosis14
Cat-scratch disease
Cat-scratch disease26
Erythema nodosumErythema nodosum
Erythema nodosum68
EndocarditisEndocarditis
Endocarditis38
Yao syndrome
Yao syndrome1
Sjögren syndromeSjögren syndrome
Sjögren syndrome17
Coxsackie viral infection
Coxsackie viral infection11
Hepatitis B virus infection
Hepatitis B virus infection2
Urticarial vasculitisUrticarial vasculitis
Urticarial vasculitis41
ErysipelasErysipelas
Erysipelas53
Eosinophilic cellulitisEosinophilic cellulitis
Eosinophilic cellulitis17
DermographismDermographism
Dermographism26
Allergic contact dermatitisAllergic contact dermatitis
Allergic contact dermatitis315
Poison ivy, oak, sumac dermatitisPoison ivy, oak, sumac dermatitis
Poison ivy, oak, sumac dermatitis71
Polymyalgia rheumatica
Polymyalgia rheumatica2
Polyarteritis nodosaPolyarteritis nodosa
Polyarteritis nodosa50
Stevens-Johnson syndromeStevens-Johnson syndrome
Stevens-Johnson syndrome93
Drug-induced phototoxic reactionDrug-induced phototoxic reaction
Drug-induced phototoxic reaction46
VasculitisVasculitis
Vasculitis116
Bedbug biteBedbug bite
Bedbug bite60