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6 Cards in this Set
- Front
- Back
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How will myopathy present? What are the two main groups of myopathy? |
1. Significant motor loss, with no sensory involvement 2. Proximal vs Distal myopathy |
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What are the causes of proximal weakness? |
1. Myopathy (will not have sensory involvement) 2. NMJ lesion (test for fatiguability) 3. Neurogenic |
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What are the 3 main causes of myopathy? |
1. Hereditary 2. Congenital (rare) 3. Acquired (PACE, PODS) |
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name some hereditary muscular dystrophies |
1. Duchenne's muscular dystrophy 2. Becker's 3. Dystrophica myotonica 4. Limb girdle 5. Fascioscapulohumeral |
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name some causes of acquired myopathy |
PACE PODS Polymyositis or Dermatomyositis Alcohol, AIDs Carcinoma Endocrine (hyperthyroidism, hypothyroid, cushing's acromegaly, hypopituitarism) Periodic paralysis (hyperK, hypoK) Osteomalacia Drugs (steroids, choroquine, zidovudine, clofibrate) Sarcoidosis |
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Describe signs of dystrophica myotonica |
Face: - frontal baldness - expressionless triangular fascies - atrophy of temporalis muscle - partial ptosis - cataracts and subcapsular deposits in eye Neck: - atrophy of SCM - test for weak neck flexion (neck extension normal) Hands: - Percussion myotonia - tap over thenar eminence, look for contraction and then slow relaxation of abductor pollicis brevis Arms: - Wasting and weakness of arms distally (usually distal affected first, then proximal weakness) Chest: - cardiomyopathy ( then cardiac failure) - gynaecomastia Genitals: - Testicular atrophy ** no sensory loss |
