Q. a 12 yrs old boy came with complaint of sore throat one month back after that he developed fever which is still persisting. for the last 20 days he developed pain and swelling in large joint.pain started from rt knee later ankle elbow added.now he
has pain in all joints.pain is very severe.he is also having pain in neck and back.he is not able to squat.he is also having pain in back and neck.there are small nodules at elbow and knuckles.CRDIOVASCULAR SYS IN NAD.BRIEFLY HE IS HAVING FEVER FOR MONTH PAIN
IN SWELLING INVOLVING ALL JOINTS FOR 20 DAYS. ON EXAM JOINTS ARE TENDER.SUBCUTANEOUS NODULE ARE PRRSENT AT ELBOW AND KNUCKLE.WHAT COULD BE DIAGNOSIS.