I've just found an article with two interesting cases of 'exploding head syndrome' - a medical condition where affected people spontaneously hear an exceptionally loud explosion-like noise.
The condition is relatively harmless, causing people only to be startled, and it doesn't seem linked to seizure activity or epilepsy. Owing to the fact it's both benign and uncommon, it's not been widely studied and so its cause remains a mystery.
Case 1
A 48-year-old man was seen in December 2006. For the past several months about three to four times a month, he had been having attacks of a peculiar sensation in the head likened to the noise of an exploding bomb only at night while going off to sleep. The 'explosion' would wake him up and disappear completely the moment he woke up.
There was no he...
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