Exploding Head Syndrome Symptoms, Causes and Treatments

Loud Noises During Sleep Transition May Occur with Stress, Sleep Fragmentation

Exploding head syndrome may cause disturbing symptoms but does not require treatment
Exploding head syndrome may cause disturbing symptoms but does not require treatment. Getty Images

BLAM! CRASH! When such a loud and disturbing noise occurs surrounding sleep, you might think you are dreaming even though you are awake. You might even think a gunshot or car crash has occurred outside your bedroom and get up to check it out. Sudden loud noises around sleep transitions may also occur as part of a condition called exploding head syndrome. What is exploding head syndrome? Learn about the most common symptoms, the causes and why it occurs, and consider effective treatments if it is bothersome.

What Are the Symptoms of Exploding Head Syndrome?

Exploding head syndrome may almost sound like a made-up name. You might envision a head popping like a balloon like you might see on a cartoon. But for the people who have this rare and unusual sleep disorder, the drama that name conjures up is very real. Those with exploding head syndrome may hear loud noises during sleep transition - so loud that they may parallel something you'd imagine coming from a special effects sound stage.

This parasomnia involves the experience of hearing a loud bang within one's head. The specific noise type may vary, sometimes sounding like a bomb explosion, gunshot, car crash, or even a clash of cymbals; on occasion, some may also experience a bright flash of light associated with the noise. The condition can be greatly upsetting and distressing, especially if it is not initially understood. Fortunately, there is no pain or other physical symptoms associated with it.

What Causes Exploding Head Syndrome?

Exploding head syndrome, or "sensory starts" as it is sometimes known, commonly occurs in the transition period around deep sleep. It seems to occur more often in women, especially after age 50, but it has been reported in a child as young as 10. Its precise cause is not known.

It may be similar to other phenomena such as sleep paralysis that occur in the transitions between states of sleep and consciousness.

Exploding head syndrome often occurs in association with extreme fatigue or high levels of stress. The attacks may vary over time, and sometimes abruptly cease for long periods.

Effective Treatments to Resolve Exploding Head Syndrome

The condition is not dangerous, and treatment is generally limited to reassurance and stress management. It sometimes helps to simply know what it is and that it is nothing serious. Following general sleep guidelines can be helpful as well. In some cases, the tricyclic antidepressant called clomipramine may be a useful option.

If you think this may be affecting you, and it is bothersome, speak to your doctor about your options. It may be helpful to arrange a sleep study to ensure there are not other disorders like sleep apnea contributing to your sleep fragmentation.


"Exploding Head Syndrome." American Sleep Association. Accessed February 5, 2014.

Mowzoon, N et al. "Neurology of Sleep Disorders." Neurology Board Review: An Illustrated Guide. 2007;742.

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