12/04/2024
HEARING LOSS PT 2:
"Everybody mumbles."
"My hearing is fine."
These are common phrases to hear in an audiology clinic and sometimes, they ARE true. However, they are often more of a denial of an existing hearing loss.
But IS it really denial? Studies show that from the time that somebody starts to recognize an issue with their hearing to the time that they make their first step toward doing something about it, an average of 7 YEARS has elapsed. This may seem like denial or stubbornness (and sometimes it totally is), but there is a good chance that it could be something else.
To understand how somebody can be so resistant to the hearing loss that is so obvious to a spouse, coworker, friend, family member (and sometimes neighbor, if the TV is cranked), we need to have an understanding of how hearing loss tends to occur, and how it is so very different from something like vision loss. This is a key point to understand, especially if you are in frequent contact with a hearing impaired person.
I suspect that many people feel that hearing loss would be like somebody turning down a volume k**b on life, but it is almost never like that. I sometimes try to explain what vision loss would be like if we lost our vision the way that many people lose their hearing. If our vision declines, often everything loses sharpness relatively uniformly (if there isn't an underlying factor contributing). Imagine that instead of that, the color yellow started to fade very slowly, followed by orange at a slower rate. After that, maybe pinks would start to lose their vibrancy. Red may be impacted slightly, but let's say that blues, greens, browns, etc are still as full as they've always been. You could go years without ever noticing that things were changing because so much of what you see is "normal" and only certain lighter colors are impacted. Maybe you start to wonder why people are gushing over a spectacular sunset when it just seems "okay" to you. It could take several years of this before you happen to notice that that picture, an azalea in the yard, or some object that you've had for 25 years is looking duller than it used to.
This is how hearing loss sneaks up on many people. In the Ear, Nose, and Throat (ENT) world, we see a huge variety of hearing loss configurations, but by far the most common is a loss of hearing in the high frequencies which very often occurs with normal or near normal hearing in the low or middle frequencies. If you picture a piano keyboard, the people in these cases would not hear the keys on the right side as well as they hear the ones in the middle or to the left, and some won't hear them at all. These people may hear the left hand notes as well as they ever did, and this is what can cause confusion. If they were listening to a piano performance, they would hear many of the notes just fine-well enough to not even notice that the others weren't balanced. Likewise, they can hear people talking and may understand them pretty well, but sometimes struggle with certain voices, sounds, or situations.
"Selective hearing" is a rather common diagnosis-most often made by a significant other! They laugh about it, but IS it somebody just not listening? Many people will come in for a hearing test insisting that they can hear fine, but then the test shows something very different. They may hear MOST of the frequencies used in speech, but these high frequency losses tend to impact the subtle consonants like "sh, f, th" etc. These help us understand what we're hearing and these sounds are very easily covered by background noise, making conversations difficult to understand, even if they are audible. This is frustrating to the listener as well as those that are constantly being asked to repeat themselves.
There are many factors that may contribute to this high frequency hearing loss. Some medications or medical procedures can bring it on (chemotherapy can be very rough on your auditory system), noise exposure impacts a certain range of those high frequencies, but high frequency hearing loss is very often just a side effect of living life. The way that our anatomy is set-up, the microscopic hair cells in our inner ears that are responsible for translating sound waves into impulses to our brain take a substantial beating in the high frequencies first. They get worn down from use. It is usually impossible to pinpoint just what has caused your hearing loss, because it is almost always an amalgamation of factors that occur over years
This type of hearing loss can easily cause us to mishear certain words-especially if somebody is speaking quickly or facing a different direction. If the listener is engaged in something (watching TV, reading, scrolling on a phone, etc), that could make it even more difficult to pick up that somebody is speaking to them. Television can be difficult to watch even with decent hearing, so somebody that is hearing impaired will need to concentrate even harder to hear, and this may take some concentration away from hearing somebody that is trying to talk to them. Rather than getting annoyed because they have not responded to what you said, maybe find a way to get their attention BEFORE talking. It isn't (necessarily) that they aren't paying attention, but hearing can take a surprising amount of effort. It also doesn't help AT ALL if the speaker is in another room! We hear this counter-argument fairly often from people that are defending themselves from accusations of hearing loss. Heck, we even do it here amongst ourselves with two audiologists talking from adjacent rooms, and if ANYbody should really know better, you'd think it would be us!
Communicating with somebody with hearing loss can be exhausting, but these steps could possibly help ease the experience a bit.
Sometimes, these seemingly normal high frequency hearing losses may suggest a more serious problem, as was touched upon in Part 1. Your audiologist should be on the lookout for signs that your hearing loss may be something more, and a referral to ENT out of an abundance of caution is a good idea.
Up next, the different types of hearing losses and how they are treated....