Some common types of sleep disorders include:

• Insomnia, in which one may have difficulty falling asleep or staying asleep throughout the night.
• Sleep apnea, in which you experience abnormal patterns in breathing while you are asleep. There are several types of sleep apnea.
• Restless legs syndrome (RLS), a type of sleep movement disorder. Restless legs syndrome, also called Willis-Ekbom disease, causes an uncomfortable sensation and an urge to move the legs while you try to fall asleep.
• Narcolepsy, a condition characterized by extreme sleepiness during the day and falling asleep suddenly during the day.