Category: Neurology
Keywords: CNS, PNS, UMN, LMN, reflex, Babinski, tone (PubMed Search)
Posted: 10/14/2020 by WanTsu Wendy Chang, MD
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Central Nervous System | Peripheral Nervous System | |
Pattern of Symptoms | • Hemibody involvement • Weakness of UE extensors • Weakness of LE flexors | • Distal involvement in polyneuropathy • Distal and proximal involvement in polyradiculoneuropathy • Proximal involvement in polyradiculopathy • Sensory often precedes motor symptoms • Pure proximal>distal weakness may be due to myopathy or NMJ disorder |
Sensory Symptoms | • Central poststroke pain (hyperalgesia, allodynia) • Sensory level in spinal cord pathology • Proprioception involved early in dorsal column disorders | • Neuropathic pain (burning, tingling, shock-like) • Ascending sensory loss involving distal BLE>BUE in polyneuropathy • Proprioception involved late in polyneuropathy |
Reflexes | • Hyperreflexia in affected limb(s) after acute period • Positive Babinski’s sign | • Hyporeflexia in affected limb(s) |
Tone | • Increased after acute period | • Decreased |