Hyperacusis is a hearing disorder that makes it hard to deal with everyday sounds. You might also hear it called sound or noise sensitivity. If you have it, certain sounds may seem unbearably loud even though people around you don't seem to notice them.
Hyperacusis is rare. It affects 1 in 50,000 people. Most people who have it also have another condition called tinnitus, which is a buzzing or ringing in your ear.
Hyperacusis is a hearing disorder. But a lot of people who have it also have normal hearing.
Hyperacusis Causes and Risk Factors
Your ears detect sounds as vibrations. If you have hyperacusis, your brain confuses or exaggerates certain vibrations. So even if you get the same signals as someone else, your brain reacts differently to them. That's what causes the discomfort.
People aren't typically born with hyperacusis. It usually results from certain diseases or health issues. The most common ones are:
An injury to your head (for instance, one caused by an airbag)
Damage to one or both ears because of medications or toxins
A viral infection that affects your inner ear or facial nerve (Bell's palsy)
Temporomandibular joint (TMJ) disorder
Lyme disease
Tay-Sachs disease
Migraine headaches
Using Valium regularly
Certain kinds of epilepsy
Chronic fatigue syndrome
Meniere's disease
Posttraumatic stress disorder (PTSD)
Depression
Autism
Surgery on your jaw or face
Williams syndrome
Being around a loud noise also can cause hyperacusis. Something like a single loud gunshot can trigger the condition. But it also can come from being near loud noises over a long period.
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