Infectious
Adenovirus
Arbovirus
EBV
Ehrlichiosis
Enterovirus
Fifths disease
HSV 6
Leptospirosis
Lyme
Meningococcemia
Mycoplasma
Parvovirus (B19)
Primary HIV
Psittacosis
Rickettsia
Rubella
Rubeola
Secondary syphilis
Streptobacillus moniliformis
Typhoid<unk> /typhus
Adenovirus
Arbovirus
EBV
Ehrlichiosis
Enterovirus
Fifths disease
HSV 6
Leptospirosis
Lyme
Meningococcemia
Mycoplasma
Parvovirus (B19)
Primary HIV
Psittacosis
Rickettsia
Rubella
Rubeola
Secondary syphilis
Streptobacillus moniliformis
Typhoid<unk> /typhus
Noninfectious
Acrodermatitis enteropathica
Allergy
Dermatomyositis
Erythema marginatum
Erythema multiforme
Lupus
Serum sickness
Sweet's syndrome
Acrodermatitis enteropathica
Allergy
Dermatomyositis
Erythema marginatum
Erythema multiforme
Lupus
Serum sickness
Sweet's syndrome
Fever and rash
Nausea and vomiting 
Nausea and vomiting
Acute fever
Leukostasis and hyperleukocytosis
Neutropenic fever
Erythematous rash
Abdominal pain 