Propriospinal myoclonus is a movement disorder characterized by brief, involuntary jerks that occur during the transition to sleep. It can be confused with Restless Legs Syndrome or sleep starts. These movements can cause severe Excessive Daytime Sleepiness in the individual, and can indicate a more severe neurological condition, such as multiple sclerosis, or Parkinson’s Disease. Clonazepam and anticonvulsants may help reduce the symptoms.1
The International Classification of Sleep Disorders (ICSD) lists Propriospinal myoclonus as a Sleep-Related Movement Disorder (SRMD).2
- Mahowald MW, “Other Parasomnias,” in Kryger M, Roth T, Dement W (ed.), Principles and Practice of Sleep Medicine (5th Edition), St. Louis: Elsevier Saunders, 2011, pages 1198-1105.
- American Academy of Sleep Medicine, International Classification of Sleep Disorders (Third Edition), Darien, IL: American Academy of Sleep Medicine, 2014.