Final answer:
Insomnia is a sleep disorder involving difficulty falling or staying asleep, leading to daytime fatigue.
Explanation:
Insomnia is a sleep disorder characterized by difficulty falling or staying asleep. Individuals with insomnia may also wake up frequently during the night and feel unrested during the day.
Symptoms of insomnia include inability to fall asleep, waking up too early, experiencing multiple awakenings during the night, and feeling tired during the day.
Factors such as stress, poor sleep habits, mental health disorders, and certain medications can contribute to insomnia.
Learn more about Insomnia here:
https://brainly.com/question/40328646
