FN: Muscle weakness differential Flashcards

1
Q

Locational causes

A
  1. Cerebrum/Brainstem
  2. Cord
  3. Anterior horn
  4. Roots/Plexus
  5. Motor Nerves
  6. NMJ
  7. Muscle
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2
Q

Cerebrum/Brainstem causes of muscle weakness

A
  1. Vascular: infarct/Haemorrhage
  2. Inflammation: MS
  3. SOL
  4. Infection: encephalitis, abcess
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3
Q

Cord causes of muscle weakness

A
  1. Vascular: anterior spinal artery infarct
  2. Inflammation: MS
  3. Injury
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4
Q

Anterior Horn

A

MND

Polio

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5
Q

Roots/Plexus caues

A
  • Spondylosis
  • Cauda equina syndrome
  • Carcinoma
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6
Q

Motor Nerves

A

Mononeuropathy: e.g. compression
Polyneuropathy: GBS, CMT

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7
Q

NMJ causes

A

GB
LEMS
Botulism

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8
Q

Muscle causes

A

Toxins: steroids
Poly-/Dermo-myositis
Inerited: DMD, BMD, FSH

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