Three Types of Hypersomnia:
– Sufferers have extreme sleepiness and require as much as 16 to 20 hours a day.
Idiopathic Hypersomnia (non-REM narcolepsy)
– Excessive sleepiness and prolonged sleep at night. With idiopathic hypersomnia, individuals suffer from episodes of non-REM sleep that may last up to two hours. Unlike narcolepsy, it does not involve suddenly falling asleep, strong emotions or losing muscle control.
Post Traumatic Hypersomnia (non-REM narcolepsy)
– Excessive sleepiness due to a physical injury or a disease in the central nervous system such as a brain injury, infection or spinal cord injury. IT usually will disappear over a few weeks or months.