<prompt> Most common chronic ahritis seen in children ?JRARheumatic ahritisRheumatic feverSepsis  <response>: Ans. is a i.e., JRA Amongst the given option only JRA causes chronic ahritis in children. Ahritis o Ahritis in children is diagnosed if - AThere is swelling or effusion in a joint B There are any 2 of the following features - i Decreased ROM iii Tenderness ii Pain iv Increased local temprature Differential diagnosis of ahritis Acute ahritis usually Acute rheumatic fever Transient toxic synovitis Ahritis associated with Kawasaki disease Henoch-Scholein purpura 5. Septic ahritis Staphylococcus aureus, Hemophilus influenzae, Neisseria meningitidis Trauma Subacute ahritis 2-6 weeks I. Reactive ahritis secondary to extra-aicular infection Ahritis associated with SLE, dermatomyositis, polyaeritis nodosa Bone pains ? ahritis associated with leukemia neuroblastoma Ahritis associated with lyme disease brucellosis Sickle cell disease, bleeding diathesis, hemahrosis Primary immunodeficiencies e.g., Brutons hypogammaglobulinemia II. Chronic ahritis 6 weeks Juvenile rheumatoid ahritis 4. Legg-Calve-Pehes disease Ankylosing ahritis 5. Psoriasis Tubercular ahritis 6. Inflammatory bowel disease 