Excessive daytime sleepiness refers to the inability to stay alert during the major awake period of the day, resulting in you falling asleep at inappropriate times.
When sleepiness interferes with daily routines and activities, or reduces your ability to function, it is considered excessive.
This is a prevalent condition. In Singapore, the prevalence of excessive daytime sleepiness has been reported to be 9 percent (Ng TP et al, Sleep Medicine 2005).
Signs of excessive daytime sleepiness may include:
Causes of excessive daytime sleepiness include the following. It is commonly caused by more than one of these causes.
If you feel sleepy during the day despite getting enough sleep, consult your physician who will evaluate the possible causes and advise on the appropriate management. It is important to get proper diagnosis and treatment of the underlying cause of the sleepiness. Your physician may refer you to a sleep disorders clinic for a comprehensive evaluation of your problem.
Identifying the cause(s) of excessive daytime sleepiness is the key to its management. Treatment is directed towards the specific underlying cause.