Sleep disorders are conditions that affect your ability to get the rest your body needs and maintain wakefulness. There are over 80 sleep disorders that impact:
How well you sleep (quality).
When you fall asleep and if you can stay asleep (timing).
How much sleep and wakefulness you get (quantity or duration).
Everyone can experience problems with sleep from time to time. But you might have a sleep disorder if:
You regularly have trouble sleeping.
You feel tired during the day even though you slept for at least seven hours the night before.
It becomes difficult to perform regular daytime activities.