Rheumatology conditions Flashcards
Rheumatoid arthritis is HLA____ mediated?
- HLA-DR4
What are potential triggers of rheumatoid arthritis?
- Smoking
- Infection
- Stress
What is the main structure involved in rheumatoid arthritis?
- synovium
What classification system is used in rheumatoid arthritis?
- ACR/EULAR
- DAS 28
Clinical features of rheumatoid arthritis?
- morning stiffness lasting greater than 1 hour
- relieved by exercise
- involvement of small joints of hands and feet
- symmetrical
What are the 2 auto-antibodies in rheumatoid arthritis?
- Rheumatoid factor
- Anti-CCP antibodies
What scoring system is used in rheumatoid arthritis?
- DAS 28
What DAS28 score indicates remission?
- DAS less than 2.6
Treatment of rheumatoid arthritis?
- DMARDs
- NSAIDs
- steroids
Describe swan-neck deformity in rheumatoid arthritis?
- hyperextension at the PIP joint and flexion of the DIP joint
Describe boutonniere deformity of the thumb in rheumatoid arthritis?
-flexion of the PIP joint and hyperextension of the DIP joint)
Define osteoarthritis?
- chronic disease characterised by cartilage loss and accompanying periarticular change
Where are the most commonly affected joints in osteoarthritis?
- knees
- hands (TMC, PIP, DIP)
- Hips
What is an osteophyte?
- New bone formation
What are risk factors for osteoarthritis?
- genetic
- age
- female
- obesity
- joint injury
What are some features of osteoarthritis on x-ray?
- bone erosion
- osteophytes
What is generalised OA?
- At either the spine or the hand joints and in at least 2 other joint regions
Where are heberdens nodes seen?
- DIP joints
Where are Bouchards nodes seen?
- PIP joints
What is the clinical presentation of OA?
- Pain worse with joint use
- morning stiffness less than 30 mins
- poor grip
Pain felt at the hip region may be pain originating from where?
- lower back
Where may pain from the hip radiate to?
- the groin or knee
Occipital headaches may be characteristic of what?
- spine involvement of OA
How do you diagnose OA?
- clinical
- x-ray (joint space narrowing, sclerosis, cysts)
Pharmacologic treatment of OA?
- Analgesia
- Local intra-articular steroid injections
What is the definition of a crystal arthropathy?
- deposition of various minerals in joints and soft tissues leading to inflammation
What are the 2 main causes of gout?
- increased urate production
- reduced urate excretion
Hyperuricaemia may be a risk factor for what?
- gout
What are causes of increased urate production?
- increased dietary intake
- alcohol
What are causes of reduced urate excretion?
- chronic renal impairment
- hypothyrodism
What is the most common site of gout?
- 1st MTP
What crystals are associated with gout?
- monosodium urate crystals
What crystals are associated with pseudogout?
- calcium pyrophosphate crystal deposition
What crystals are associated with hydroxyapatite?
- basic calcium phosphate deposition
Chronic tophaceous gout is characterised by what?
- granulomatous inflammation around urate crystals
- tophaceous
What is the single best investigation of gout?
- Polarised microscopy of synovial fluid
What will polarised microscopy of synovial fluid in gout appear like?
- negative birefringent urate crystals.
What test can be done to rule out septic arthritis?
- joint aspiration
What blood test can be performed to investigate gout?
- uric acid levels
What is the treatment of acute gout?
- NSAIDs + PPI
- Colchicine
- Steroids
When can preventative treatment of gout be introduced?
- wait 1 week after acute attack
What is the preventative treatment of gout?
- lifestyle modification
- allopurinol
What are some causes of calcium pyrophosphate deposition disease (CPPD)
- Age
- OA
- hyperparathryodism
- haemochromatosis
calcium pyrophosphate deposition disease (CPPD) will have a ___ -ve/+ve___ birefringent
- positive
Treatment of hydroxyapatite?
- NSAIDs
- intra articular steroid injections
What scoring system can be used to diagnose joint hypermobility syndrome
- modified beighton score
What type of hypersensitivity reaction is SLE/
- Type III hypersensitivty
Who is most likely to be effected by SLE?
- Female
- childbearing ages
- Afro-caribbean
What are some environmental triggers of SLE?
- Silica
- Smoking
- UV light
- Infection
What scoring system is used for SLE?
- EULAR/ACR
What are symptoms of SLE?
- Fever
- fatigue
- malar rash
- discoid rash
- serositis
What is serositis?
- pleural or pericardial inflammation (effusion)
- seen in SLE
What are the 3 most common SLE antibodies?
- ANA
- dsDNA
- Complement
What is an example of a specific antibody in SLE?
- dsDNA
Treatment of SLE?
- Sun protection
- Hydroxychloroquine
Explain sjogrens syndrome?
- Autoimmune condition that affects the exocrine glands
- leads to dry mucous membranes
What are the symptoms of sjogrens syndrome?
- dry gritty eyes
- dry mouth and throat
- joint pains
What antibodies are associated with sjogrens syndrome?
- Anti Ro
- Anti La
What test can be performed in sjogrens syndrome?
- Schirmer test
What are some complications of sjogrens syndrome?
- increased risk of lymphoma
- eye infections
What is systemic sclerosis also called?
Scleroderma
What is systemic sclerosis?
- multi-systemic autoimmune disease
What are symptoms of systemic sclerosis?
- Raynauds
- skin thickening and tightening
- dysphagia
- GORD
What antibodies are associated with scleroderma?
- Anticentromere
- Anti-Scl70
Small mouth with puckering may be a facial change seen in what condition?
- Scleroderma (systemic sclerosis)
What is the classic triad of Raynauds’ phenomenon?
- Blanching (white)
- acrocyanosis (purple)
- reactive hyperaemia (redness)
Treatment of Raynaud’s phenomenon?
- Calcium Channel Blockers
- Nitrates
What are the 4 different types of spondyloarthropathies?
- Ankylosing spondylitis
- Psoriatic arthritis
- Reactive arthritis
- Enteropathic arthritis
What is the similarities between the spondyloarthropathies?
HLA B27
How is mechanical back pain described?
- Worse after activity
- Worse at end of day
- Better with rest
How is inflammatory back pain described?
- Worse with rest
- Better with activity
- significant early morning stiffness
Descrive enthesitis
-Inflammation at insertion of tendons into bone
Describe Dactylitis
- inflammation of an entire digit
What are some extra-articular features of spondyloarthropathies
- occular inflammation
- mucocutaneous lesion
- rare aortic incompetence or heart block
Describe Ankylosing spondylitis
- chronic systemic inflammatory disorder
Where does Ankylosing spondylitis primary affect?
- spine
What classification systems are used in Ankylosing spondylitis?
- ASAS classification
Investigations into Ankylosing spondylitis
- bloods (inflammatory, HLA B27)
- X ray
- occiput to wall test
- schobers test
Symptoms of Ankylosing spondylitis
- limited lumbar motion
- lower back pain not relieved by rest
- reduced chest expansion
- question mark posture
Clinical features of psoriatic arthritis?
- nail involvement
- dactylitis
- enthesitis
What causes reactive arthritis?
- infection induced systemic illness
- 1-4 weeks post infection
What are the most common infections that trigger reactive arthritis?
- urogenital (chlamydia)
- eneterogenic (salmonella)
Reiters syndrome is also called?
- Reactive arthritis
What is the classical Reiters (Reactive arthritis) triad?
- urethritis
- conjunctivitis
- arthritis
What should be performed before commencing treatment for reactive arthritis?
- joint aspiration to rule out septic arthritis
Symptoms of enteropathic arthritis?
- GI loose, watery stools
- Weight loss
- Fever
Investigations into enteropathic arthritis
- Upper and lower GI endoscope
- joint aspirate
Management of spondyloarthropathy
- NSAIDs
- corticosteriods
- physio
- OT
What is a myopathy?
- Disease of the muscle in which the muscle fibres do not function properly
- results in muscular weakness
What are the 2 types of inflammatory myopathies?
- polymyositis
- dermatomyositis
Describe the clinical features associated with inflammatory myopathies?
- Muscle weakness
- Gradual onset
- Reduced muscle strength
What are the most common muscles affected in inflammatory myopathies?
- proximal muscles (shoulders and hips)
What investigations would you carry out for inflammatory myopathies?
- CK levels
- EMG
- Muscle biopsy
What is the treatment of inflammatory myopathies?
- Corticosteroids
- Immunosuppression
What is polymyalgia rheumatica characterised by?
- pain and stiffness
What are associated effects of polymyalgia rheumatica
- temporal arteritis
- giant cell arteritis
What are the symptoms of polymyalgia rheumatica?
- ache in shoulders and hip
- movement limited
- muscle strength normal
- morning stiffness
Polymyalgia rheumatica is associated with _____ muscle strength?
- normal muscle strength
Inflammatory myopathies is associated with ____ muscle strength?
- reduced muscle strength
What is temporal arteritis?
- Granulomatous arteritis of large vessels
What are the symptoms of temporal arteritis?
- Headache
- Scalp tenderness
- Potential visual loss
What is used in the diagnosis of temporal arteritis?
- Raised ESR
- USS of temporal artery
- temporal artery biopsy
What is the treatment of temporal arteritis/giant cell arteritis?
- steroid
- Prednisolone 40-60mg
- higher dose given due to the potential vision loss
What is fibromyalgia characterised by?
- Pain and fatigue
What are the most common muscles affected in fibromyalgia?
- Proximal muscles
What are the symptoms of fibromyalgia?
- Muscle pain (pins and needles)
- fatigue
- headaches
- anxiety
What criteria is used in the diagnosis of fibromyalgia?
- ACR diagnostic criteria
What is vasculitis?
- inflammation of the blood vessels
What are some consequences of vasculitis?
- inflammation
- ischamia
- necrosis
What is primary vasculitis?
- results from an inflammatory response
- no known cause
What is secondary vasculitis?
- triggered by an infection, drug, toxin
What should always be checked in vasculitis?
- urinalysis
What are the main causes of large vessels vasculitis?
- Takayasu arteritis (TA)
- Giant cell arteritis (GCA)
Where is a common site for a bruit in takayasu arteritis?
- carotid artery
What are investigations of giant cell arteritis?
- ESR
- CRP
- Temporal artery biopsy
- USS
Renal features of Granulomatosis with polyangiitis?
- necrotising glomerulonephritis
What is Henoch-Schonlein Purpura (HSP)?
- Acute immunoglobulin IgA mediated disorder
- Pre-ceding URTI (Strep A)
HSP management?
- self limiting
- essential to perform urinalysis
Localised AAV management
- methotrexate + steroids