-Fever,
joint inflammation,
tenderness, and sharp pain, sometimes accompanied by chills and associated with an injury or another illness, may indicate infectious arthritis.
-In children, intermittent fever, loss of appetite, weight loss, and anemia, or blotchy rash on the arms and legs may signal the onset of some types of juvenile rheumatoid arthritis. Other forms of juvenile rheumatoid arthritis are associated with joint stiffness, a limp, or joint swelling.