An INSOMNIAC is a person who suffers from sleeplessness or insomnia. They are unable to get a good night's sleep and often experience fatigue, irritability, and difficulty concentrating during the day. Insomnia can be caused by a variety of factors, including stress, anxiety, depression, and certain medications. Treatment for insomnia typically involves lifestyle changes, such as avoiding caffeine and alcohol, exercising regularly, and practicing relaxation techniques.