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What It’s Like to Have Exploding Head Syndrome?

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If you’ve ever heard a sudden loud noise in your sleep that turns out to be imaginary, you’re not losing your mind.

In fact, you’re among the roughly 10-15% of people who have experienced Exploding Head Syndrome (EHS), a phenomenon that strikes as a person is falling asleep. Here’s what you need to know about the condition.

Exploding Head Syndrome can sound strange and disorienting

EHS starts when you hear a loud noise, ranging from the sound of fireworks and gunfire to thunder and lightning. It’s generally painless and lasts just a few seconds.

There’s this sudden crescendo of noise, then a profound and jarring explosion of sound, electrical fizzing and a bright flash in my vision, like someone has lit a spotlight in front of my face,” an EHS sufferer explained to the BBC.

People respond to EHS differently. Some think they’ve heard a real event and wake up confused, looking around for the source of the noise.




Others who have it more frequently may find it anxiety-inducing and start avoiding sleep, or feel panicked when they go to bed.

Some people have even incorporated the episodes into conspiracy theories.

Some individuals believe they’re not natural events, but are essentially caused by malevolent government agencies,” says Brian Sharpless, an associate professor at the American School of Professional Psychology at Argosy University, Northern Virginia and author of the recent book Unusual and Rare Psychological Disorders.

Sharpless has led studies on EHS. “I’ve received a number of phone calls from conspiracy theorists who don’t believe the scientific explanations.”

It may stem from problems with the brain shutting down

Because EHS occurs when a person is falling asleep, researchers think it may be connected to the brain having problems shutting down.

The way I usually describe EHS is by considering the brain to be a computer,” says Sharpless.

You go through a series of steps when you’re shutting down your computer, and your brain does the same thing. As you go to sleep, your auditory and visual neurons are normally inhibited.

“What we think happens during EHS is that instead of shutting down, these neurons fire all at once. When they do they, they create a perception of sound, which is why sufferers hear the loud noises.

Sharpless found that EHS is connected to isolated sleep paralysis—a condition in which a person wakes up unable to move or speak for a few minutes at a time.

In a study of 211 undergraduate students, Sharpless and his team found that the overall EHS rate was 18%, and 37% of those with EHS also experienced sleep paralysis.

There are no well-established treatments for EHS, and there has never been a controlled trial for it, Sharpless says.

It’s probably not shocking to hear that there’s not a lot of money to study EHS and that many doctors have never even heard of it,” he says.

The best piece of advice for sufferers is “to not freak out and to realize that it’s a natural event,” Sharpless says.

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