There are several different types of sleep disorders such as; being excessively tired in the day, insomnia, sleeping at the “wrong times” (circadian rhythm disorders) and unwanted behaviours during sleep (parasomnias).
The Epworth scale is often used to assess excessive daytime sleepiness (EDS). A score of more than 11 indicates EDS.
More information can be found on:
www.nhs.uk/conditions that includes several different sleep disorders such as sleep walking, sleep paralysis, narcolepsy and restless leg syndrome