Table 2.

Amor classification criteria for spondyloarthropathy

Clinical symptoms or past history of

Lumbar or dorsal pain at night, or lumbar or dorsal morning stiffness = 1

Asymmetrical oligoarthritis = 2

Buttock pain (buttock pain = 1, alternating buttock pain = 2)

Sausage-like finger or toe = 2

Heel pain = 2

Iritis = 2

Non-gonococcal urethritis or cervicitis accompanying, or within 1 mo before, the onset of arthritis = 1

Acute diarrhoea accompanying, or within 1 mo before, the onset of arthritis = 1

Presence of history of psoriasis and/or balanitis and/or of inflammatory bowel disease (ulcerative colitis, Crohn's disease) = 2

Radiological findings

Sacroiliitis (grade > 2 if bilateral, grade > 3 if unilateral) = 3

Genetic background

Presence of HLA-B27 and/or family history of ankylosing spondylitis, reactive arthritis, uveitis, psoriasis or chronic inflammatory bowel disease = 2

Response to therapy

Definite improvement of musculoskeletal complaints with NSAIDs in less than 48 h or relapse of the pain in less than 48 h if NSAIDs discontinued = 2

A patient is considered as having a spondyloarthropathy if the sum of the scores is 6 or more