Insomnia: Insomnia is a sleep disorder characterized by persistent difficulty falling asleep or staying asleep, leading to inadequate or poor quality sleep.
Sleep apnea: Sleep apnea is a sleep disorder where breathing repeatedly stops and starts during sleep due to blocked airways or improper brain signals.
Narcolepsy: Narcolepsy is a neurological disorder that causes excessive daytime drowsiness and sudden uncontrollable episodes of falling asleep during normal waking hours.