what are the symptoms of seronegative arthritis?
['tenderness, swelling, and redness in the joints.', 'stiffness, especially in the hands, knees, ankles, hips, and elbows.', 'stiffness in the morning that lasts for longer than 30 minutes.', 'persistent inflammation.', 'symptoms that affect joints on both sides of the body.', 'fatigue.']