Hypersomnia - refers to a type of type of dyssomnia that involves being  chronically sleepy and sleeping for long periods at a time. Also means  sleeping too much or being too sleepy during the day. It is a sleeping disorder; an abnormally excessive sleep. A person with this condition  falls asleep several times a day.
Other /More definition:
Hypersomnia refers to excessive daytime sleepiness. This can result from depression, insomnia, narcolepsy, sleep apnea, sleep drunkenness, periodic limb movements, drug abuse, and other problems. Hypersomnia is abnormally excessive sleep. A person with this condition falls asleep several times a day, chronically sleepy and sleeping for long periods at a time. Hypersomnia is also defined as a sleep disturbance in which the affected individual sleeps too much or being too sleepy during the day.
Other /More definition:
hypersomnia refers to abnormally excessive sleep. A person with this condition falls asleep several times a day.

Related Articles

Modafinil at psychology-glossary.com■■■■■■■■■■
Modafinil refers to an oral drug for the treatment of Narcolepsy which was first approved by the FDA . . . Read More
Breathing-related sleep disorder at psychology-glossary.com■■■■■■■■■■
breathing-related sleep disorder refers to sleep disruption leading to excessive sleepiness or insomnia . . . Read More
Narcolepsy at psychology-glossary.com■■■■■■■■■■
Narcolepsy refers to a sudden, irresistible, daytime sleep attacks that may last anywhere from a few . . . Read More
Antidepressant at psychology-glossary.com■■■■■■■■
Antidepressant refers to a type of medication used to treat depression and related conditions; - - It . . . Read More
Zolpidem at psychology-glossary.com■■■■■■■■
Zolpidem is classified as a hypnotic drug. These drugs help people sleep; - - In the United States, . . . Read More
Insomnia at psychology-glossary.com■■■■■■■
Insomnia is defined as the inability to fall asleep, to maintain sleep, or to get back to sleep at night. . . . Read More
Dyssomnia at psychology-glossary.com■■■■■■■
Dyssomnia refers to the problem in getting to sleep or in obtaining sleep of sufficient quality. It is . . . Read More
Huntington’s disease at psychology-glossary.com■■■■■■■
Huntington’s disease or HD refers to a genetic disorder marked by involuntary limb movements and progressing . . . Read More
Benzodiazepine at psychology-glossary.com■■■■■■■
Benzodiazepine refers to antianxiety drug such as Valium, Xanax, Dalmane, or Halcion which can also be . . . Read More
Periodic Limb Movements in Sleep at psychology-glossary.com■■■■■■■
Periodic Limb Movements in Sleep or PLMS refers to a sleeping disorder in which the patient's arms or . . . Read More