found sodium oxybate reduced daytime sleepiness in IH to the same degree as in patients with narcolepsy type 1, and the drug improved severe sleep inertia in 71% of the hypersomnia patients. In July 2020, the FDA approved Xywav™ (calcium, magnesium, potassium, and sodium oxybates), an oral solution for the treatment of cataplexy or excessive daytime sleepiness (EDS) in patients 7 years of age and older with narcolepsy. Cognitive Behavioral Therapy
Although behavioral approaches have not been demonstrated to improve clinical markers of IH, cognitive behavioral therapy has been found to potentially reduce depressive symptoms and improve self-efficacy in people with central disorders of hypersomnolence. Prognosis
IH can profoundly affect work, education, and quality of life due to excessive daytime somnolence. Patients will often need to adapt their lifestyle to avoid situations that might be dangerous while sleepy, such as high risk work, or driving. The risks associated with these activities have been found to be higher for patients with hypersomnias than for those with sleep apnea or severe insomnia. Epidemiology
Typically, the symptoms of IH begin in adolescence or young adulthood, although they can begin at a later age. After onset, hypersomnia often worsens over several years, but it is often stable by the time of diagnosis and appears to be a lifelong condition. Spontaneous remission is only seen in 10–15% of patients.According to the limited epidemiological data that exists, IH "has more of a female preponderance (1.8/1)." Family cases are frequent, in a range from 25% to 66% without any clear mode of inheritance.
Epiblepharon is a condition characterised by a congenital horizontal fold of skin near the margin of the upper or lower eyelid caused by the abnormal insertion of muscle fibres. This extra fold of skin redirects the lashes into a vertical position, where they may contact the globe of the eye. This is found most commonly in Asian individuals, especially children. One estimate puts the percentage of affected Asian children aged 7–14 years old at 12.6%. References


== External links ==