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  2. Fatal insomnia - Wikipedia

    en.wikipedia.org/wiki/Fatal_insomnia

    Fatal insomnia is an extremely rare neurodegenerative prion disease that results in trouble sleeping as its hallmark symptom. [2] The majority of cases are familial (fatal familial insomnia [FFI]), stemming from a mutation in the PRNP gene, with the remainder of cases occurring sporadically (sporadic fatal insomnia [sFI]).

  3. Irregular sleep–wake rhythm disorder - Wikipedia

    en.wikipedia.org/wiki/Irregular_sleep–wake...

    Irregular sleep–wake rhythm disorder (ISWRD) is a rare form of circadian rhythm sleep disorder. [2] [3] It is characterized by numerous naps throughout the 24-hour period, no main nighttime sleep episode, and irregularity from day to day. [4]

  4. Sleep disorder - Wikipedia

    en.wikipedia.org/wiki/Sleep_disorder

    A sleep disorder, or somnipathy, is a medical disorder affecting an individual's sleep patterns, sometimes impacting physical, mental, social, and emotional functioning. [1] Polysomnography and actigraphy are tests commonly ordered for diagnosing sleep disorders.

  5. These siblings have a disease that will one day stop them ...

    www.aol.com/news/2016-05-05-these-siblings-have...

    One day, they will simply wake up and never be able to sleep ever again. Lachlan, 28, and Hayley, 30, first became aware of the genetic disorder when their grandmother became seriously ill when ...

  6. Familial natural short sleep - Wikipedia

    en.wikipedia.org/wiki/Familial_natural_short_sleep

    Familial natural short sleep is a rare, genetic, typically inherited trait where an individual sleeps for fewer hours than average without suffering from daytime sleepiness or other consequences of sleep deprivation. This process is entirely natural in this kind of individual, and it is caused by certain genetic mutations.

  7. Non-24-hour sleep–wake disorder - Wikipedia

    en.wikipedia.org/wiki/Non-24-hour_sleep–wake...

    Non-24-hour sleep–wake disorder (non-24, [1] N24SWD, [2] or N24) is one of several chronic circadian rhythm sleep disorders (CRSDs). It is defined as a "chronic steady pattern comprising [...] daily delays in sleep onset and wake times in an individual living in a society". [ 3 ]