Sleep
Insomnia is a general term for difficulty falling asleep and/or staying asleep. Insomnia is the most common sleep problem, with many adults reporting occasional insomnia, and 10–15% reporting a chronic condition. Insomnia can have many different causes, including psychological stress, a poor sleep environment, an inconsistent sleep schedule, or excessive mental or physical stimulation in the hours before bedtime. Insomnia is often treated through behavioral changes like keeping a regular sleep schedule, avoiding stimulating or stressful activities before bedtime, and cutting down on stimulants such as caffeine. The sleep environment may be improved by installing heavy drapes to shut out all sunlight, and keeping computers, televisions and work materials out of the sleeping area.
Major depressive episode
Nearly every day, the person may sleep excessively, known as hypersomnia, or not enough, known as insomnia. Insomnia is the most common type of sleep disturbance for people who are clinically depressed. Symptoms of insomnia include trouble falling asleep, trouble staying asleep, or waking up too early in the morning. Hypersomnia is a less common type of sleep disturbance. It may include sleeping for prolonged periods at night or increased sleeping during the daytime. The sleep may not be restful, and the person may feel sluggish despite many hours of sleep, which may amplify their depressive symptoms and interfere with other aspects of their lives. Hypersomnia is often associated with an atypical depression, as well as seasonal affective disorder.