Rheumatology Flashcards
What is the triad of Behçet’s syndrome?
Oral ulcers
Genital ulcers
Anterior uveitis
Can have thrombophlebitis and dvt
What heart defect is a complication of ehlers Danlos syndrome?
Aortic regurgitation
Also mitral valve prolapse and aortic dissection
What is felty’s syndrome?
Rheumatoid arthritis, splenomegaly, low white cell count
What type of hypersensitivity reaction is SLE?
Type 3
diagnosis - 65 yo builder with gradual onset L hip pain worse with activity and late in day?
osteoarthritis
4 x ray findings in osteoarthritis?
LOSS
loss of joint space
osteophytes
subcondral cysts
subcondral sclerosis
lumps on fingers in OA?
heberden’s nodes
bouchard’s nodes
affected joints in hand signs of OA?
heberdens - DIP
bouchards - PIP
non medical options for mgt of OA?
weight loss
physiotherapy
medical/surgical management for hip OA?
replacement
NSAIDS
steroid injections
diagnosis - 43 yo with symmetrical joint pain, swelling and stiffness in hands, wrists and feet. sx worst in morning
rheumatoid arthritis
which antibodies are associated with rheumatoid arthritis?
rheumatoid factor
CCP antibodies (cyclic citrullinated peptide)
hand deformities in RA?
swan neck deformity
ulnar deviation at MCP jts
Z shaped deformity
boutonniere’s deformity
investigation for synovitis in RA?
ultrasound
scoring system for RA?
DAS28
first line mgt for RA?
methotrexate
leflunomide
sulfasalazine
initial type of biologic?
TNF inhibitor
eg infliximab, adalimumab
dx - 35yo with asymmetrical pain and stiffness in fingers and feet. skin and nail changes
psoriatic arthritis
nail changes in psoriatic arthritis?
onycholysis
nail pitting
name for inflam of entire digit? (in PA)
dactylitis
screening tool for psoriatic arthritis?
PEST
psoriasis epidemiological screening tool
most severe form of psoriatic arthritis with osteolysis and telescoping of digits?
arthritis mutilans
dx - 42 yo with knee pain and swelling 2 weeks post gastroenteritis?
reactive arthritis
classic triad in reactive arthritis?
cant see cant pee cant climb a tree
conjunctivitis
balanitis
arthritis
most common triggers in reactive arthritis?
STIs - chlamydia
gastroenteritis
gene associated with reactive arthritis?
HLA B27
most important differential for reactive arthritis?
septic arthritis
ix to exclude other causes?
joint aspirate
gene associated with ankylosing spondylitis?
HLA B27
what are the main symptoms of ankylosing spondylitis in the back?
pain on lateral flexion
pain/stiffness on forward flexion
is ankylosing spondylitis worse with movement or rest?
rest
what is the special test for ankylosing spondylitis?
schobers
x ray finding in late ankylosing spondylitis?
bamboo spine
MRI finding in early ankylosing spondylitis?
bone marrow oedema
is ankylosing spondylitis worse in morning or eve?
morning
diagnosis: hair loss, malar rash, SOB, splenomegaly, joint pain, lymphadenopathy, myalgia
SLE
what worsens the rash in SLE?
sunlight
initial antibody test for SLE?
ANA (antinuclear abs)
specific antibody tests for SLE?
anti-double stranded DNA (anti-DSDNA)
anti-smith
first line management for mild SLE?
hydroxychloroquine
biologic used in severe SLE, targeting B cells?
rituximab
diagnosis: 30yo with skin lesions on face and pathces of hair loss. sx worse with sunlight
discoid SLE
diagnostic investigation for discoid SLE?
skin biopsy
tx options for discoid SLE?(4)
- sun protection
- topical steroids
- intralesion steroid injections
- hydroxychloroquine
what type of cancer can discoid SLE lesions become?
squamous cell carcinoma
what are the 3 stages of raynaud’s?
white -> blue -> red
what % of people with raynaud’s have an associated underlying disease?
10-20%
what CT disease is raynaud’s most associated with?
systemic sclerosis
screening blood test for systemic sclerosis?
antinuclear antibodies
test to examine the small blood vessels in the fingers?
nailfold capillaroscopy
medical management for raynauds?
prophylactic nifedipine
what does crest stand for in crest syndrome?
Calcinosis
Raynaud’s
Esophageal dysmotility
Sclerodactyly
Telangiectasia
what antibodies are checked initially in suspected connective tissue dx?
antinuclear antibodies
antibodies in limited cutaneous systemic sclerosis?
anti-centromere abs
antibodies in diffuse cutaneous systemic sclerosis?
anti-scl-70 abs
diagnosis: 65 yo white woman with 1mo shoulder and pelvic girdle pain and stiffness, worse in am
polymyalgia rheumatica
abnormal blood tests in polymyalgia rheumatica?
raised CRP and ESR
raised plasma viscosity
treatment for polymyalgia rheumatica?
prednisolone 15mg OD
additional medx to protect against s/es of pred?
- bisphosphonates
- calcium and vit d
- PPI
what is next course of action if they don’t respond to steroids in PMR?
stop steroids
usually respond dramatically to steroids
? diff dx
what should be co prescribed with methotrexate?
folate
reduce risk of myelosuppression
which antibiotic cannot be prescribed with methotrexate?
trimethoprim (or anything containing it)
features of antiphospholipid syndrome?
venous/art thrombosis
recurrent miscarriages
livedo reticularis
other features: pre-eclampsia, pulm htn
which antibody should be tested for when suspecting antiphospholipid syndrome?
anti-cardiolipin ab
what is the pattern of arthropathies in psoriatic arthritis?
assymetrical oligoarthritis (hands and feet)
symmetrical polyarthritis (similar to RA)
medication for acute gout?
colchicine
medication for gout prophylaxis?
allopurinol
can hydroxychloroquine be used in pregnancy?
yes
what are the clinical features of osteomalacia?
bone pain, tenderness and proximal myopathy (waddling gait)
when should bisphosphonates be started?
- Anyone with a BMD >-2.5 on DEXA
- Anyone 75 or Over with a Fragility Fracture
- Anyone on High Dose Corticosteroids (>7.5mg for >3months)
diagnosis - 55yo with pain and weakness in thighs, shoulders and upper arms. Purplish rash on eyelids.
dermatomyositis
initial blood test in dermatomyositis?
creatine kinase
which antihypertensive medications cause gout?
thiazide diuretics
eg bendroflumethiazide
diagnosis: 72 yo with R sided temporal headache with scalp tenderness and aching in jaw while chewing
giant cell arteritis
condition associated with GCA?
polymyalgia rheumatica
what is the key complication of giant cell arteritis?
vision loss
what is the key blood test for GCA?
ESR
what is the definitive test for GCA?
temporal artery biopsy
what is the initial tx for GCA?
prednisolone (high dose - 40-60mg/day)
what is a similar diagnosis to dermatomyositis but without skin changes?
polymyositis
what is the name of the lesions on the hands in dermatomyositis?
gottron lesions
what antibodies are associated with dermatomyositis?
anti-jo 1 (polymyositis)
anti-mi 2 (dermato)
antinuclear antibodies
what is the definitive ix for dermatomyositis?
muscle biopsy
what should be considered in new cases of dermatomyositis?
possible underlying malignancy
what is the first line tx in dermatomyositis?
corticosteroids
dx: 45yo woman with dry eyes and mouth. sex affected by vaginal dryness
sjogren’s syndrome
what are the affected structures in sjogren’s?
exocrine glands
what is sjogren’s syndrome secondary to?
SLE
RA
what antibodies are associated with sjogren’s syndrome?
anti ro
anti la
what is the test for dry eyes?
schirmer test
paper in eye measures liquid production
what drug is used to halt disease progression in sjogren’s?
hydroxychloroquine
dx: sinusitis, nosebleeds, saddle shaped nose, cough, wheeze, haemoptysis, glomerulonephritis
wegener’s
ie granulomatosis with polyangiitis
what type of disease is granulomatosis with polyangiitis?
small vessel vasculitis
what is the blood test for small vessel vasculitis?
ANCA
what are the treatments for small vessel vasculitis?
steroids
immunosuppressants
dx: 28yo with recurrent eps of oral and genital ulcers, and episodes of knee pail and swelling
behcet’s disease
what gene is associated with behcet’s disease?
HLA B51
what is the special test for behcet’s disease?
pathergy test
what is the disease pattern of behcet’s disease?
relapsing-remitting
what is the topical tx for mouth ulcers in behcet’s disease?
steroids (soluble betamethasone)
what are 7 causes of mouth ulcers?
simple aphthous ulcers
IBD
coeliac
vit B12, folate or iron deficiency
HSV
hand, foot and mouth
squamous cell carcinoma
what joint is usually affected in gout?
first metatarso-phalangeal
what blood test is raised in gout?
serum urate
what is seen on aspirated fluid in gout?
negatively birefringent needle shaped crystals
what is first line for an acute flare of gout?
NSAIDS
what medication is used for acute gout in renal impairment?
colchicine
what is the main s/e of colchicine?
diarrhoea
dx: 70yo with hot, swollen, stiff, painful knee
pseudogout (CPPD)
what is in the joint in pseudogout?
calcium pyrophosphate crystals
how do CPP crystals appear on joint fluid microscopy?
rhomboid shaped crystals that are positively birefringent of polarised light
what is the first line mgt of pseudogout?
NSAIDs
what is the risk assessment tool for osteoporosis?
FRAX tool
what is the key investigation for osteoporosis?
DEXA scanning
what is the T score needed for diagnosis of osteoporosis?
<-2.5
guidelines for deciding whether to treat osteoporosis?
NOGG guideline
first line tx for osteoporosis?
bisphosphonates
moab tx for osteoporosis?
denosumab
dx: 74yo housebound south asian lady w/ fatigue, muscle weakness and bone pain. XR - abnormal fractures
osteomalacia
what is seen on pelvic XR in osteomalacia?
looser zones - demineralized osteoid
cause of osteomalacia?
vit D deficiency
what abnromal electrolytes appear in osteomalacia?
low calcium and phosphate
which liver test is abnormal in osteomalacia?
alkaline phosphatase (ALP)
what hormone is abnormal in osteomalacia?
parathyroid hormone - raised
what is the management for osteomalacia?
tx dose vit D
dx: 68 yo with bone pain, deformity, pathological fractures and hearing loss
paget’s disease of the bone
what is the name for well defined osteolytic lesions on XR in paget’s dx of the bone?
osteoporosis circumscripta
classic skull XR appearance in paget’s?
‘cotton wool’ appearance
key abnormal blood test in paget’s dx of bone?
raised ALP
main tx in paget’s disease of bone?
bisphosphonates
which bones are typically affected in pagets?
skull, spine/pelvis, long bones of lower extremities
what is the most common causative organism in septic arthritis?
staph aureus
which STI organism is the most likely causative organism in reactive arthritis?
neisseria gonorrhoeae
what is the morphology of neisseria gonorrhoeae?
gram negative diplococci
how are acute flares of rheumatoid arthritis managed?
oral or IM corticosteroids
what are the risks associated with bisphosphonates?
- oesophageal reactions
- osteonecrosis of the jaw
- inc risk of atypical stress fractures
- acute phase response
- hypocalcaemia
what is the management for ankylosing spondylitis?
1st line: exercise and NSAIDs
DMARDs useful if there’s peripheral joint involvement
eg sulfasalazine
what is seen on CXR in pneumonitis?
interstitial infiltration and alveolar shadowing
how does pneumonitis present?
cough
dyspnoea
fever
malaise
what is the first line management for osteoarthritis?
topical NSAIDs
then oral
then steroid injections if orals not working
how does still’s disease present?
arthralgia
elevated serum ferritin
salmon pink maculopapular rash
pyrexia (cyclical)
lymphadenopathy
RF and ANA NEGATIVE
features of pagets disease?
older male with bone pain and isolated raised ALP
bowing of tibia and bossing of skull
management of pagets disease?
bisphosphonate
ankylosing spondylitis xr findings?
subchondral erosions
sclerosis
squaring of lumbar vertebrae
antibody associated with scleroderma?
anti-centromere
antibody for SLE?
anti-dsDNA
tx for methotrexate toxicity?
folinic acid
differentiation between gout and pseudogout on xr?
chondrocalcinosis on XR in pseudogout
features of osteogenesis imperfecta?
presents in childhood
fractures following minor trauma
blue sclera
deafness secondary to otosclerosis
dental imperfections common
inheritance of osteogenesis imperfecta?
autosomal dominant
-» abnormality in type 1 collagen due to dec synthesis of pro-alpha 1 or pro-alpha 2 collagen polypeptides
mgt for acute reactive arthritis?
NSAIDs
mgt for ankylosing spondylitis?
- exercise and NSAIDs
- DMARDs if peripheral joint involvement
reactive arthritis genetic association?
HLA B27
osteomalacia blood results?
low ca
low phosphate
raised alp
raised pth
mgt for rheumatoid arthritis?
initially: DMARD monotherapy (methotrexate/sulfasalazine/leflunomide) +/- short course of bridging prednisolone
Gout medication that interacts with azathioprine?
Allopurinol
Lesion in young person in diaphysis of pelvis and long bones?
Ewing sarcoma
Low levels of which types of complement are associated with the development of systemic lupus erythematous?
C3 + C4
Xr findings late ankylosing spondylitis
Apical fibrosis
Tx SLE
Hydroxychloroquine