psoriatic arthritis Flashcards
1
Q
what is psoriatic arthritis?
A
- inflammatory arthritis associated with psoriasis
- a type of seronegative spondyloarthropathy
2
Q
do all patients with psoriatic arthritis have psoriasis?
A
10-15% of patients with psoriatic arthritis do not have psoriasis
3
Q
is psoriatic arthritis seronegative or seropositive?
A
-seronegative
4
Q
what are the patterns of psoriatic arthritis?
A
- Symmetrical polyarthritis
- Asymmetrical pauciarthritis
- Spondylitic pattern
5
Q
describe how a symmetrical polyarthritis pattern psoriatic arthritis may present?
A
- presents similar to RA
- more common in women
- affects hands, wrists, ankles and DIPs (MCP joint is unaffected unlike RA)
6
Q
describe how asymmetrical pauciarthritis pattern psoriatic arthritis may present
A
- pauciarthritis describes how only a few joints are affected
- affects mainly the digits (fingers and toes) and the feet
7
Q
describe how a spondylitic pattern of psoriatic arthritis may present?
A
- back stiffness
- sacroilitis
- atlanto axial involvement
8
Q
what is the most severe form of psoriatic arthritis?
A
-arthritis mutilans
9
Q
how does arthritis mutilans appear?
A
- this is the most severe form of psoriatic arthritis!
- causes osteolysis (destruction) of the bones of the fingers and toes which causes digit shortening giving an appearance that is often called ‘telescopic finger’
10
Q
what is the treatment for psoriatic arthritis?
A
Similar to RA!
- DMARDs (usually methotrexate)
- Anti TNF available for those who do not respond to standard treatment
- joint replacement can be considered in larger joints which are severely affected
