JIA Flashcards
Dx of JIA
6wks
exlcusion of other forms of juvenile arthritis
types of JIA onset
polyarthritis
pauciarthritis
systemic disease
JIA differential Dx
SLE reactive arthritis Lyme dermatomyositis kawasaki (rash) Rheumatic fever IBS hematologic vasculitis septic arthritis toxic synovitis of hip neoplasia infantile-onset multi-systemic inflammatory disease psychogenic
systemic onset
10-15%
1 or > joints
extra-articular features >6wks
pauciarticular onset
usually oligo 50%+ subtype I- classic subtype II- spondylitic subtype III- psoriatic
polyarticular onset
30-40%
RF pos
or
RF neg
growing pains
6-13yrs lower extremities pain usually in thighs, calves, shins, not joints most frequent at night correlated with strenuous exertion normal growth and development heat, massage, analgesics
systemic JIA aka
stills disease
systemic JIA signs and symptoms
malaise, fever (irregular), rash, adenopathy, hepatosplenomeglay, serositis, hepatitis, DIC, anemia
systemic JIA MSK symptoms
arthritis, myalgia, arthralgias, symmetrical swelling
systemic JIA age of onset
usually 5 usually female
JIA rash
evanescent and intermittent salmon pink circumscribes macular 2-6mm, confluence common chest, axilla, thighs, upper arms pruitis unusual
systemic JIA labs
ERS high
CBC: anemia, leukocytosis, thrombocytosis
IgM RF- neg
ANA- neg
systemic disease course and prognosis
younger age of onset > risk poor health
1/2 will have recurrent episodes
1/3 have progressive arthritis
amyloidosis can occur
management of systemic JIA
splinting to prevent deformity PT and OT NSAIDs corticosteroids if severe DMARDs?
pacuiarticular disease subtype I
M
most common type
clinical features of pacuiarticular subtype I
joints <5 (knee, ankle, elbow, hip)
early growth abnormalities
chronic uveitis w/in 5 years (asymptomatic) - must send these kids to have eyes checked yearly
uveitis
flame hemorrhages
must be screened yearly
occurs in 30% of pts
labs of pacuiarticular subtype I
ESR- increased or normal CBC: normal RF-neg ANA- can be + HLAA2, DR5, DRw6, and DRw8
course and prognosis of of pacuiarticular subtype I
early detection and management important
exacerbations and remissions
long-term prognosis of joints good
complications: alteration of growth, iridocyclitis (blind)
management of pacuiarticular subtype I
splint PT and OT NSAIDS corticosteroid injections controversial frequent ophthalmologic assesment
pauciarticular disease subtype II aka
juvenile spondylarthropathy
clinical pauciarticular disease subtype II
>9 M>F periphearl arthritis LL enthesopathies acute iritis SI pain in some Axial pain in some
labs pauciarticular disease subtype II
ESR- normal-high
CBC- normal
RF- neg
HLA-B27