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Have you ever been drifting off to sleep, only to be jerked awake by the sound of a bomb going off inside your head? If you have, then you have most likely experienced exploding head syndrome, a mysterious and poorly understood sleep disorder.A typical episode is characterised by the experience of an abrupt loud noise or a sense of an explosion inside the head that occurs during the transition from wakefulness to sleep.
It has been proposed that the experience of EHS is due to a disruption in this normal switching-off process, which gives rise to delayed and disjointed surge of neuronal activation to sensory networks in the absence of any external stimuli. These brief surges of activation are then perceived as the loud, nondescript sounds that characterise EHS.
EHS episodes are very short and usually there is no associated pain. If there is, it is mild and transient. In contrast, many headaches are longer-lasting and are associated with significantly higher levels of pain.of over 3,000 participants who had experienced EHS, we found that 45 percent of respondents reported moderate to severe levels of fear associated with their EHS.
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