ABSTRACT
Changes found outwith the joint include conjunctivitis, iritis and episcleritis. These are usually found in association with the ankylosing spondylitis pattern of psoriatic arthritis.
Figure 9.2 Psoriatic arthritis of distal interphalangeal joint ring finger with nail pitting on the middle finger
Figure 9.3 Arthritis mutilans
INVESTIGATIONS
Haematology
ESR is high with the symmetrical polyarthritis, but otherwise the ESR is usually only moderately raised. Normochromic normocytic anaemia is present.
