Tag Archive: chewing

Why do certain sounds bother some people?

Photo credit: LuAnn Snawder Photography licensed under CC BY-ND 2.0

by Daniel Fink, MD, Chair, The Quiet Coalition

Some people are bothered by common sounds that don’t bother others, such as noise from chewing. The technical name for this disorder is “misophonia.”

For many years, misophonia has been thought to be a psychological problem, but new research shows that the problem may be neurological in origin. People with misophonia have differences seen on brain scans from those without misophonia.

Medical science is replete with examples of diseases thought initially to be due to psychological causes, but later found to have biological bases. For example, stomach ulcers were long thought to be caused by stress, with a contribution from spicy food or alcohol, but then they were found to be caused by bacteria.

In the auditory field, hyperacusis–a sensitivity to sound, in which noises that don’t bother others are perceived as painful by those with this condition–was also long thought to be psychological. Then researchers found pain fibers in the auditory nerves, and the biological basis of this condition was better understood.

So kudos to the researchers studying misophonia. For those who suffer from this disorder, having the science world focus on identifying the biological basis for the problem may be the first step to treating it.

Dr. Daniel Fink is a leading noise activist based in the Los Angeles area. He is the founding chair of The Quiet Coalition, an organization of science, health, and legal professionals concerned about the impacts of noise on health, environment, learning, productivity, and quality of life in America. Dr Fink also is the interim chair of Quiet Communities’ Health Advisory Council, and he served on the board of the American Tinnitus Association from 2015-2018.

Does the sound of chewing or pen clicking make you enraged?

You are not alone.  Misophonia is a disorder marked by “a hatred of sounds such as eating, chewing or repeated pen clicking.”  It’s not well understood, but the known universe just got a lot bigger thanks to a team of researchers from Newcastle University who have evidence that enraging noises are caused by a brain connection overdrive.

The lead researcher, Dr Sukhbinder Kumar of the Institute of Neuroscience at Newcastle University and the Wellcome Centre for NeuroImaging at University College London, said that, “[f]or many people with misophonia, this will come as welcome news as for the first time we have demonstrated a difference in brain structure and function in sufferers.”   With this news suffers may see the end of one problem they often face; namely, the casual dismissal of their complaints by medical professionals.  As Dr. Kumar notes, “[t]his study demonstrates the critical brain changes as further evidence to convince a sceptical medical community that this is a genuine disorder.”