Spinal myoclonus: clinical features
Written and reviewed by Dr Ibrahim Imam, Consultant Neurologist. Last reviewed .
Spinal myoclonus: clinical features. This usually results from structural abnormalities. Fully referenced neurology checklist.
Features of segmental spinal myoclonus (SSM)
- This usually results from structural abnormalities
- It manifests with focal or segmental repetitive jerks
- The jerks are confined to one or several adjacent spinal segments
- They persist in sleep and during voluntary activity
- They may demonstrate stimulus sensitivity
- Minipolymyoclonus is a form of SSM involving the fingers or toes
- The electromyogram (EMG) shows prolonged myoclonic bursts
Features of propriospinal myoclonus (PSM)
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