Symptoms
- Muscle paresis or paralysis
- fibrillations
- fasciculations
- hypotonia or atonia- Tone is not velocity dependent.
- Areflexia or hyporeflexia -Along with deep reflexes even cutaneous reflexes are also decreased or absent
- Strength -weakness is limited to segmental or focal pattern, Root innervated pattern
The extensor Babinski reflex is usually absent. Muscle paresis/paralysis, hypotonia/atonia, and hyporeflexia/areflexia are usually seen immediately following an insult. Muscle wasting, fasciculations and fibrillations are typically signs of end-stage muscle denervation and are seen over a longer time period. Another feature is the segmentation of symptoms - only muscles innervated by the damaged nerves will be symptomatic.
Read more about this topic: Lower Motor Neuron Lesion
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