Most common chronic arthritis seen in children –

Amongst the given option only JRA causes chronic arthritis in children. Arthritis Arthritis in children is diagnosed if - A) There is swelling or effusion in a joint B) There are any 2 of the following features - Decreased ROM     Pain  Tenderness Increased local temperature Differential diagnosis of arthritis Acute arthritis (usually <2 weeks) Acute rheumatic fever Transient (`toxic') synovitis Arthritis associated with Kawasaki disease Henoch-Schlein purpura Septic arthritis (Staphylococcus aureus, Hemophilus influenza, Neisseria meningitides) Trauma Subacute arthritis (2-6 weeks) Reactive arthritis secondary to extra-articular infection Arthritis associated with SLE, dermatomyositis, polyarteritis nodosa Bone pains (? arthritis) associated with leukaemia/neuroblastoma Arthritis associated with Lyme disease/brucellosis Sickle cell disease, bleeding diathesis, hemarthrosis Primary immunodeficiency’s (e.g., Bruton's hypogammaglobulinemia) Chronic arthritis (> 6 weeks) Juvenile rheumatoid arthritis        Ankylosing arthritis     Tubercular arthritis  Legg-Calve-Perthes disease       Psoriasis  Inflammatory bowel disease