Infection
Bacterial
Adenitis
Endocarditis
Mastoiditis
Occult abscess
Pyelonephritis
Sinusitis
Tb
Mycoplasmal
Chlamydial
Lymphogranuloma venereum
Psittacosis
Rickettsial
Q fever
Rocky mountain spotted fever
Viral
CMV
Viral hepatitis
Mononucleosis
Fungal
Blastomycosis
Histoplasmosis
Parasitic
Malaria
Toxoplasmosis
Cysticercosis
Non-infectious Inflammatory
Juvenile idiopathic arthritis
SLE
Regional enteritis
Rheumatic fever
Ulcerative colitis
Vasculitis
Malignancy
Leukemia
Lymphoma
Neuroblastoma
Wilms' tumor
Drug Induced
Antibiotics
Anticonvulsants
Anti TB
Procainamide
Quinidine
Serum sickness
Misc
AIDS
CNS dysfunction
Environmental hyperthermia
Factitious
Familial dysautonomia
Kawasaki
PE
Serial infections
Thyrotoxicosis
Bacterial
Adenitis
Endocarditis
Mastoiditis
Occult abscess
Pyelonephritis
Sinusitis
Tb
Mycoplasmal
Chlamydial
Lymphogranuloma venereum
Psittacosis
Rickettsial
Q fever
Rocky mountain spotted fever
Viral
CMV
Viral hepatitis
Mononucleosis
Fungal
Blastomycosis
Histoplasmosis
Parasitic
Malaria
Toxoplasmosis
Cysticercosis
Adenitis
Endocarditis
Mastoiditis
Occult abscess
Pyelonephritis
Sinusitis
Tb
Mycoplasmal
Chlamydial
Lymphogranuloma venereum
Psittacosis
Rickettsial
Q fever
Rocky mountain spotted fever
Lymphogranuloma venereum
Psittacosis
Q fever
Rocky mountain spotted fever
CMV
Viral hepatitis
Mononucleosis
Blastomycosis
Histoplasmosis
Malaria
Toxoplasmosis
Cysticercosis
Juvenile idiopathic arthritis
SLE
Regional enteritis
Rheumatic fever
Ulcerative colitis
Vasculitis
Leukemia
Lymphoma
Neuroblastoma
Wilms' tumor
Antibiotics
Anticonvulsants
Anti TB
Procainamide
Quinidine
Serum sickness
AIDS
CNS dysfunction
Environmental hyperthermia
Factitious
Familial dysautonomia
Kawasaki
PE
Serial infections
Thyrotoxicosis
Fever of unknown origin 
Infection
Acute fever
Bacterial
Neutropenic fever
Adenitis
Q fever
Endocarditis