We read with interest the article by Caplanne and colleagues¹ and note the association between psoriasis and spondyloarthropathy in three of their eight cases. We have reviewed our series of 228 cases of psoriasis and inflammatory arthritis. Forty five patients (20 female) had spondyloarthropathy according to the Amor criteria.2 Five of 45 (three female) had their first symptoms at the age of 55 or older according to patient recall and case note review.

The older onset spondyloarthropathy group had a higher rate of cervical spine involvement than those with younger onset (χ²=4.73, p=0.0296) in agreement with Caplanne et al, but we were unable to demonstrate higher rates of thoracic spine involvement (p=0.852), shoulder involvement³(p=1.000) or chest wall arthritis (p=0.847). All five …