Distinguishing the Cause of Muscle Weakness: Lower Motor Neuron Dysfunction vs Myopathy*
Feature | Lower Motor Neuron Dysfunction | Myopathy* |
|---|---|---|
Distribution of weakness | Distal > proximal | Proximal > distal |
Fasciculations | May be present | Absent |
Reflexes | Diminished | Often preserved |
* Nerve function intact. | ||
> = more affected than. | ||