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MKSAP Neurology Review

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Motor system first!<br />

[Strength, tone, atrophy, ±reflex]<br />

• CNS lesion?<br />

– Hyper-reflexia (after initial shock)<br />

– Increased tone<br />

– NO ATROPHY (caveat: anterior horn cells)<br />

• Peripheral lesion?<br />

– Decreased reflexes<br />

– Decreased tone<br />

– Atrophy (caveat: demyelinating neuropathies)

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