Multisystem Autoimmune Disease Flashcards
name some autoimmune connective tissue diseases
systemic lupus erythematosus scleroderma Sjogren's syndrome auto-immune myositis mixed connective tissue disease
name some autoimmune systemic vasculitis diseases
giant cell arteritis
granulomatosis polyangiitis (Wegener’s)
microscopic polyangiitis
eosinophilic granulomatosis polyangiitis (Churg-Strauss)
diagnosis of autoimmune diseases
- Cardinal clinical features: history and exam
- Immunology
- Imaging
- Tissue
- Exclusion of differential diagnosis
mimics of autoimmune diseases
• Drugs – cocaine, minocycline, PTU • Infection – HIV, endocarditis, hepatitis, TB • Malignancy – lymphoma • Cardiac myxoma • Cholesterol emboli • Scurvy
SLE: UK prevalence
28/100,000
SLE: UK incidence
4/100,000
SLE: M:F
1:9
SLE: ethnicity
afro-caribbean>asain>caucasian
SLE: age of onset
15-50
SLE: classification criteria
any 4:
o Malar rash
o Discoid rash – raised, scarring, permanent marks, alopecia
o Photosensitivity
o Oral ulcers
o Arthritis (at least 2 joints)
o Serositis (pleurisy or pericarditis)
o Renal – significant proteinuria or cellular casts in urine
o Neurological – unexplained seizures or psychosis
o Haematological – low WCC, platelets, lymphocytes, haemolytic anaemia
o Immunological – anti ds-DNA, SM, cardiolipin, lupus anticoagulant, low complement
o ANA
scleroderma: UK prevalence
24/100,000
scleroderma: UK incidence
10/1,000,000
scleroderma: onset
30-50
scleroderma: M:F
1:3
scleroderma: complications
pulmonary hypertension
pulmonary fibrosis
renal crisis
smal bowel bacterial overgrowth
Sjogren’s syndrome: UK prevalence
1/100
Sjogren’s syndrome: UK incidence
4/100,000
Sjogren’s syndrome: onset
40-50
Sjogren’s syndrome: M”F
1:(
Sjogren’s syndrome: signs and symptoms
dry eyes and mouth parotid gland enlargement fatigue fever myalgia arthalgia
Sjogren’s syndrome: complications
lymphoma neuropathy purpura interstitial lung disease renal tubular acidosis
auto-immune myositis: prevalence
6/1,000,000