MSK/Rheumatology Flashcards
blood test for rheumatoid arthritis?
Anti CCP (most sensitive), rheumatoid factor, raised ESR/CRP
Management of RA
Ibuprofen/NSAIDs
Steroids
Methotrexate (DMARDs)
Rituximab (biologics)
Gout
intra-articular build up of monosodium urate crystals, associated with hyperuricaemia
Gout presentation
1st metatarsal and distal interphalangeal joints often inflamed, formation of tophi (lumps of urate salt)
Management of gout
Lifestyle changes (e.g. eat less red meat), NSAIDs (colchicine), allopurinol (xanthine oxidase inhibitor)
Investigations for gout
Joint aspiration and polarised light microscopy (needle live negatively birefringent crystals), increased uric acid levels on blood test
Pseudogout
Calcium pyrophosphate crystals inducing damage to joints
Risk factors for pseudogout
older females, hyperthyroidism, hyperparathyroidsism
presentation of pseudogout
hot, swollen, tender joint, often knees
Ix for pseudogout?
joint aspiration and polarised light microscopy (rhomboid positive birefringent crystals)
Mx of pseudogout
NSAIDs (colchicine)
SLE
aNA and aDsDNA antibodies attack soft tissue causing widespread inflammation and damage
SLE risk factors
young, black, women
Presentation of SLE?
butterfly rash, weight loss, fever, fatigue, joint pain, mouth ulcers, correctable ulnar deviation
Ix for SLE?
Bloods - raised ESR, normal CRP, ANA and aDsDNA antibodies present
Management of SLE?
Ibuprofen, cyclophosphamide, hydroxychloroquine, prednisolone, methotrexate
Complications of SLE?
cardiac, lung and kidney involvement, widespread inflammation causing damage
Inflammation of the kidneys due to SLE?
lupus nephritis
What is fibromyalgia
unknown aetiology, hyperaesthesia (exaggerated perception of pain), allodynia (pain in response to non-painful stimuli)
Ix of fibromyalgia
11/18 tender points for > 6 months, other investigations to exclude other diseases
Mx for fibromyalgia
Education of patient and family, TCA (amitriptyline), analgesia, exercise, CBT
Symptoms of fibromyalgia
Widespread chronic pain, chronic fatigue, memory problems, non-restorative sleep, morning stiffness
Risk factors for gout
FHx, high alcohol intake, purine rich food, excess fructose intake, drugs (e.g. low dose aspirin)
Food group that can help to reduce gout?
Dairy
Sjogren’s syndrome
autoimmune syndrome that affects exocrine glands (e.g. salivary, lacrimal)
Presentation of Sjogren’s syndrome
Dry mucous membranes i.e. dry mouth, dry eyes, dry vagina
Ix for Sjogren’s syndrome
Presence of anti-Ro and anti-La antibodies, Schirmer test (tears travelling <10mm)
Risk factors for Sjogren’s syndrome
Fx, female, >40
Managment of Sjogren’s syndrome?
Artificial tears and saliva, vaginal lubricants, hydroxychloroquine to halt progression
Giant cell arteritis (GCA) pathophysiology
affects aorta and/or its major branches (carotid/vertebral arteries), temporal artery often involved (hence aka temporal arteritis)
Risk factors for giant cell arteritis (GCA)
> 50, female, Hx of polymyalgia rheumatica
Presentation of giant cell arteritis (GCA)
New onset of headache, scalp tenderness (hurts brushing hair), jaw claudication, visual disturbances
Ix for giant cell arteritis (GCA)
Raised ESR and/or CRP, temporal artery biopsy (gold standard for diagnosis) shows giant cells and granulomatous inflammation
Mx for giant cell arteritis (GCA)
High dose glucocorticoids ASAP (e.g. prednisolone)
Presentation of Takayasu’s arteritis
‘pulseless disease’, arm claudication, syncope
Mx for Takayasu’s arteritis
steroids
Treatment for Takayasu’s arteritis
Angiography = gold standard, elevated ESR and CRP, granulomatous inflammation on histology
Polyarteritis nodosa is associated with…
Hepatitis B
Polyarteritis nodosa is associated with which infection?
Hepatitis B
Presentation of polyarteritis nodosa
peripheral neuropathy, HTN, livedo reticularis, unilateral orchitis, generalised abdominal pain
Ix for polyarteritis nodosa
Raised ESR/CRP, HBsAg, biopsy
Mx for polyarteritis nodosa
If hep B +’ve - antiviral agent, plasma exchange and corticosteroids
If hep B -‘ve - corticosteroids
Kawasaki disease risk factors
children, males, Japanese
Presentation of Kawasaki disease (CREM)
C - conjunctivitis R - rash E - erythema of hands and feet M - mucous membrane changes (strawberry tongue) \+ fever
Kawasaki disease
arteritis associated with mucocutaneous lymph nodes
EGPA
eosinophilic granulomatosis with polyangiitis - small and medium vasculitis, most associated with lung and skin problems
Henoch-Schonlein purpura
IgA vasculitis, due to IgA deposits in the blood vessels of affected organs such as skin, kidneys, GI tract
Presentation of Henoch-Schonlein purpura
Symmetrical purpuric rash affecting lower limbs or buttocks in children, joint pain, abdominal pain, renal involvement
Granulomatosis with polyangiitis
Small vessel vasculitis, affects respiratory tracts and kidney
Granulomatosis with polyangiitis presentation
SADDLE-SHAPED NOSE, epistaxis, crusty nasal/ear secretions, sinusitis, cough, wheeze, haemoptysis
Ix for granulomatosis with polyangiitis
High eosinophils on FBC, presence of c-ANCA
Marfan syndrome
Autosomal dominant condition, affects gene involved in creating fibrillin
Presentation of Marfan syndrome
Tall, long limbs and fingers, hypermobility, high arch palate
Mx of Marfan syndrome
Lifestyle changes - avoid intense exercise and caffeine, beta blockers and ARBs, annual echocardiogram
Complications of Marfan syndrome
Mitral/aortic valve prolapse, aortic aneurysms, lens dislocation, pneumothorax
Risk factors for Marfan syndrome?
FHx
Ehlers-Danlos syndrome
Rare disease, group of inherited connective tissue disorders, caused by faulty collagen
Presenation of Ehlers-Danlos syndrome
(varies but typically) joint hypermobility, easily stretched skin, easy bruising, chronic joint pain, re-occurring dislocation
Mx for Ehlers-Danlos syndrome
Physiotherapy, psychological support
Complications of Ehlers-Danlos syndrome
Prone to hernias, prolapse, aortic root dilation, joint pain, abnormal wound healing
Antiphospholipid syndrome
associated with antiphospholipid antibodies where blood becomes prone to clotting (hypercoagulable state), occurs on its own or secondary to an autoimmune disorder (especially SLE)
presentation for antiphospholipid syndrome
thrombosis, recurrent miscarriages, livedo reticularis, thrombocytopenia
Mx for antiphospholipid syndrome
long-term warfarin, pregnant women (LMWH and aspirin)
Presentation of SLE?
malar rash, fatigue, fever, weight loss, oral ulcers, myalgia, Raynaud’s, lymphadenopathy
Investigations for SLE?
ANA, anti-dsDNA, FBC (anaemia, raised CRP/ESR)
Treatment for SLE?
Hydroxychloroquine, NSAIDs, steroids (prednisolone), lifestyle (sun protection, exercise)
Antiphospholipid syndrome
Autoimmune disease, body produces antiphospholipid antibodies (aPL) to phospholipid-binding plasma proteins –> hypercoagulable state –> venous and arterial thromboses
Leads to recurrent thrombosis (DVT, PE, stoke, MI), frequency miscarriages, arthralgia
Mx for APL syndrome?
warfarin (LMWH and aspirin in pregnancy)
Pathophysiology of Sjogren’s syndrome
lymphocytic infiltration into lacrimal and salivary glands (–> dry eyes and mouth)
Secondary Sjogren’s?
secondary to SLE, systemic sclerosis, RA
Ix for Sjogren’s?
Schirmer’s test - see how far tears travel
Polymyositis/dermatomyositis
Chronic inflammation of muscles and skin (autoimmune)
Pathophysiology of polymyositis/dermatomyositis
Endothelium of endomysial capillaries targeted by antigens –> perifascicular atrophy, capillary loss, B cell infiltration, destruction of muscle fibres
Presentation of polymyositis/dermatomyositis
Slow onset proximal muscle weakness, fatigue, weight loss
Dermatomyotisis only - Gottron’s papules, photosensitive erythematous rash
Ix for polymyositis/dermatomyositis
Increase serum creatinine kinase (enzyme found in muscle cells), muscle biopsy
Tx for polymyositis/dermatomyositis
Steroids (prednisolone), sun protection, IV immunoglobulins (severe disease)