Psoriatic and Enteropathic Arthritis

Question 1

describe what psoriatic arthritis is

Answer 1

inflammatory arthritis associated with psoriasis, 10-15% can have disease without psoriasis

Question 2

what are the clinical subgroups of psoriatic arthritis (5)

Answer 2

confined to DIP of hands/feets, symmetric polyarthritis, spondylitis with/without joint involvement, asymmetric oligoarthritis with dactylitis, arthritis mutilans

Question 3

what are the clinical features of psoriatic arthritis

Answer 3

nail pitting + onycholysis, dactylitis, enthesitis, extra articular features(eg uveitis)

Question 4

what blood tests are done for psoriatic arthritis

Answer 4

inflammatory parameters raised(eg CRP,ERV), negative RF

Question 5

what is seen in an X-ray for psoriatic arthritis

Answer 5

marginal erosions + “whiskering”, “pencil in cup” deformity, osteolysis, enthesitis

Question 6

what disease is enteropathic arthritis associated with

Answer 6

IBD(9-20% have an IBD)

Question 7

what joints does enteropathic arthritis present in

Answer 7

several joints, especially knees, ankles, elbows and wrists

Question 8

what can cause the symptoms of enteropathic arthritis to worsen

Answer 8

flare-ups of IBD

Question 9

what are the GI clinical features of enteropathic arthritis

Answer 9

loose, watery stool with mucous and blood

Question 10

what are the non-GI clinical features of enteropathic arthritis

Answer 10

weight loss, fever, uveitis, enthesitis, apthous ulcers

Question 11

what investigations can be done for enteropathic arthritis

Answer 11

upper and lower GI endoscopy, joint aspirate, raised inflammatory markers, X-ray/MRI, ultrasound scan

Question 12

what may be seen in an enteropathic arthritis X-ray/MRI

Answer 12

sacrolitis

Question 13

what may be seen on an ultrasound scan of enteropathic arthritis

Answer 13

synovitis, tenosynovitis