Background The influence of patient age at onset on the clinical expression of rheumatic diseases has been widely demonstrated in relation to pathologies such as rheumatoid arthritis and ankylosing spondylitis. Such influence, however, has only occasionally been considered in connexion with psoriatic arthritis (PsoA).
Objectives To identify potential differences among the clinical manifestations of PsoA depending on patient age at the onset of the disease.
Methods Ninety-six consecutive patients diagnosed with PsoA as per the criteria of Moll and Wright were split into two groups according to whether their early symptoms of the disease appeared before or after the age of 60. The clinical features of both groups were assessed.
Results The following Table 1 shows the differential clinical features of the two patient groups, established according to onset age.
Conclusion PsoA patients with a delayed onset of the disease exhibit clinical symptoms that differ clearly from those of the other PsoA patients.
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