Image of a neural disease that would cause high-frequency hearing loss.

How frequently do you contemplate your nervous system? Most likely not all that frequently. As long as your body is performing as it is supposed to, you have no reason to consider how your neurons are firing or whether nerves are sending correct messages through the electrical pathways in your body. But you tend to take a closer look when something isn’t working right and the nerves start to misfire.

There’s one specific condition, known as Charcot-Marie-Tooth (CMT) disease, which can impact the nervous system on a fairly large scale, though the symptoms usually manifest mainly in the extremities. high-frequency hearing loss can also be triggered by CMT according to some research.

What Is Charcot-Marie-Tooth Disease?

Charcot-Marie-Tooth disease is a set of inherited disorders. In essence, these genetic disorders cause something to go wrong with your nerves or with the protective sheathing surrounding your nerves.

There is an issue with how signals travel between your brain and your nerves. Functionally, this can cause both a loss in motor function and a loss of sensation.

A combination of genetic factors usually results in the manifestation of symptoms, so CMT can be present in several variations. Symptoms of CMT commonly start in the feet and work their way up to the arms. And, high-frequency hearing loss, oddly, has a high rate of occurrence among those with CMT.

A Link Between Loss of Hearing And CMT: The Cochlear Nerve

There’s always been an anecdotal connection between loss of hearing and CMT (which means that within the CMT community everybody has heard other people talk about it). And it was hard to realize the connection between loss of sensation in the legs and problems with the ears.

A scientific study firmly established the connection just recently when a group of scientists evaluated 79 people with CMT at the University of Iowa Hospitals and Clinics.

The results were rather decisive. Nearly everyone with CMT passed their low and moderate frequency hearing tests with flying colors. But all of the individuals showed loss of hearing when it came to the high-frequency sounds (usually across the moderate levels). high-frequency hearing loss, according to this study, is likely to be linked to CMT.

The Cause of Hearing Loss and How to Treat It

The link between high-frequency loss of hearing and CMT could, at first, seem perplexing. But everything in your body, from your toes to your eyebrows, relies on the proper functioning of nerves. Your ears are exactly the same.

The theory is, CMT affects the cochlear nerve so sounds in the high-frequency range aren’t able to be interpreted. Anyone with this form of hearing loss will have difficulty hearing some sounds, including people’s voices. Trying to hear voices in a crowded noisy room is particularly difficult.

This kind of hearing loss is usually treated with hearing aids. CMT has no renowned cure. Modern hearing aids can select the exact frequencies to amplify which can offer appreciable help in battling high-frequency hearing loss. Most modern hearing aids can also do well in noisy settings.

There Could be Many Causes For Hearing Loss

Further than the unconfirmed hypothesis, it’s still not well understood what the link between high-frequency hearing loss and CMT is. But hearing aid technology offers a clear solution to the symptoms of that loss of hearing. That’s why countless people with CMT will make time to sit down with a hearing care professional and get fitted for a custom hearing aid.

Hearing loss symptoms can occur for a wide variety of reasons. Often, it’s a matter of loud sound causing injury to the ears. Blockages can be another cause. It turns out that CMT can be still another cause of hearing loss.

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