SERONEGATIVE NO SERUM MARKERS, USUSLLAY LARGER JOINTS, LOWER LIMBS, DIP JOINTS AFFECTED, ENTHESITIS, EXTRA-ARTICULAR INVOLVEMENT (IRITIS + CONJUNCTIVITIS, ORAL ULCER, BOWEL PAIN/ STOOLING CHANGES, SKIN RASH)
SYMMETRICAL 1: ANKYLOSING SPONDYLITIS, 2: ENTEROPATHIC ARTHRITIS- IBD
ASYMMETRIC DACTYLITIS(SAUSAGE DIGIT) OBSERVED, REACTIVE ARTHRITIS (i.e, Reiter's syndrome), PSORIATIC ARTHRITIS (nail changes, plaques)