Labs
CBC (Anemia, leukocytosis, thrombocytosis)
ESR, CRP
Arthrocentesis may be needed to exclude septic arthritis
CBC (Anemia, leukocytosis, thrombocytosis)
ESR, CRP
Juvenile idiopathic arthritis
Acute rheumatic fever
Reactive arthritis
Developmental dysplasia of hip
Rheumatoid arthritis
Femur fracture
Reactive poststreptococcal arthritis
Systemic lupus erythematosus