Hypersomnia (patient information)
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Hypersomnia |
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Editor-in-Chief: C. Michael Gibson, M.S.,M.D. [1] Phone:617-632-7753; Associate Editor-In-Chief: Lakshmi Gopalakrishnan, M.B.B.S.
Overview
Idiopathic hypersomnia is excessive sleeping (hypersomnia) without an obvious cause. It is different from narcolepsy in that idiopathic hypersomnia does not involve suddenly falling asleep or losing muscle control associated with strong emotions (cataplexy).
What are the symptoms of Hypersomnia?
- Symptoms often develop slowly during adolescence or young adulthood. They include:
- Daytime naps that do not relieve drowsiness
- Difficulty waking from a long sleep may feel confused or disoriented
- Increased need for sleep during the day even while at work, or during a meal or conversation
- Increased sleep time up to 14 - 18 hours per day
- Other symptoms may include anxiety, feeling irritated, low energy, restlessness, slow thinking or speech, loss of appetite, and memory difficulty.
- Cataplexy: suddenly falling asleep or losing muscle control which is part of narcolepsy, is NOT a symptom of idiopathic hypersomnia.
What causes Hypersomnia?
- The usual approach is to consider other potential causes of excessive daytime sleepiness.
- Other sleep disorders that may cause daytime sleepiness include:
- Isolated sleep paralysis
- Narcolepsy
- Obstructive sleep apnea
- Restless leg syndrome
- Other causes of excessive sleepiness include:
- Atypical depression
- Certain medications
- Drug and alcohol use
- Low thyroid function (hypothyroidism)
- Previous head injury
Diagnosis
- The health care provider will take a detailed sleep history. Tests may include:
- Multiple sleep latency test
- Sleep study (polysomnography, done to identify other sleep disorders)
- A psychiatric evaluation for atypical depression may also be done.
Treatment options
- Idiopathic hypersomnia is usually treated with stimulant medications such as amphetamine, methylphenidate, and modafinil. These drugs may not work as well for this condition as they do for narcolepsy.
- Important lifestyle changes that can help ease symptoms and prevent injury include:
- Avoiding alcohol
- Avoiding operating motor vehicles or using dangerous equipment
- Avoiding working at night or social activities that delay bedtime
Where to find medical care for Hypersomnia?
Directions to Hospitals Treating Hypersomnia