Exploding head syndrome

Exploding head syndrome
Other namesEpisodic cranial sensory shock,[1] snapping of the brain,[2] auditory sleep start[3]
SpecialtySleep medicine
SymptomsHearing loud noises when falling asleep or waking up[2]
DurationShort[2]
CausesUnknown[3]
Differential diagnosisNocturnal epilepsy, hypnic headaches, nightmare disorder, PTSD[2]
TreatmentReassurance, clomipramine, calcium channel blockers[2]
PrognosisGood[2]
Frequency~10% of people[2]

Exploding head syndrome (EHS) is an abnormal sensory perception during sleep in which a person experiences auditory hallucinations that are loud and of short duration when falling asleep or waking up.[2][4] The noise may be frightening, typically occurs only occasionally, and is not a serious health concern.[2] People may also experience a flash of light.[5] Pain is typically absent.[2]

The cause is unknown.[3] Potential organic explanations that have been investigated but ruled out include ear problems, temporal lobe seizure, nerve dysfunction, or specific genetic changes.[2] Potential risk factors include psychological stress.[2] It is classified as a sleep disorder or headache disorder.[2][5] People often go undiagnosed.[5]

There is no high-quality evidence to support treatment.[2] Reassurance may be sufficient.[2] Clomipramine and calcium channel blockers have been tried.[2] While the frequency of the condition is not well studied, some have estimated that it occurs in about 10% of people.[2] Women are reportedly more commonly affected.[5] The condition was initially described at least as early as 1876.[2] The current name came into use in 1988.[5]

  1. ^ Cite error: The named reference Go2015 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k l m n o p q r Sharpless, Brian A. (December 2014). "Exploding head syndrome". Sleep Medicine Reviews. 18 (6): 489–493. doi:10.1016/j.smrv.2014.03.001. PMID 24703829.
  3. ^ a b c Blom JD (2015). "Auditory hallucinations". The Human Auditory System - Fundamental Organization and Clinical Disorders. Handbook of Clinical Neurology. Vol. 129. pp. 433–55. doi:10.1016/B978-0-444-62630-1.00024-X. ISBN 9780444626301. PMID 25726283. S2CID 6192827. {{cite book}}: |journal= ignored (help)
  4. ^ Frese, A.; Summ, O.; Evers, S. (6 June 2014). "Exploding head syndrome: Six new cases and review of the literature". Cephalalgia. 34 (10): 823–827. doi:10.1177/0333102414536059. PMID 24907167. S2CID 31675696.
  5. ^ a b c d e Ceriani, CEJ; Nahas, SJ (30 July 2018). "Exploding Head Syndrome: a Review". Current Pain and Headache Reports. 22 (10): 63. doi:10.1007/s11916-018-0717-1. PMID 30062616. S2CID 51876942.

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