Understanding high-frequency hearing loss
There was once a television commercial for a well-known credit card company which claimed, “We treat you like you’d treat you.” It features a telephone conversation with two young men who look a lot alike. One has an affinity for frogs. The other is the credit card company representative.
“Hey! I heard you guys can help me with frog protection?” the potential customer asks the representative as he lovingly strokes the head of his giant, green, pet frog.
“Yeah, we provide fraud protection,” the representative responds and then proceeds to deliver a short pitch about the benefits of opening an account.
“Just to be clear, you are saying frog protection,” the potential customer asks.
“Fraud protection,” the representative says, as if he heard clearly.
“I think we’re on the same page,” the potential customer summarizes.
“We’re totally on the same page,” the representative concurs.
This is a funny scenario when you’re watching it play out on television, but not quite so funny when it occurs in your daily life because of hearing loss.
Take high-frequency hearing loss, for example.
People with this condition have trouble hearing sounds in the 2,000 to 8,000 Hertz (Hz) range. In speech, this includes consonants such as s, h or f. Adults with high-frequency hearing loss may have trouble understanding female voices more than male voices and difficulty hearing birds sing or the high-pitched beeping coming from their microwave oven. Speech may seem muffled, especially when using the telephone or in noisy situations.
When children have high-frequency hearing loss, it can impede their ability to learn speech and language, affecting their ability to excel in school.
Regardless of your age, high-frequency hearing loss can affect your quality of life, creating anxiety, depression and social isolation.
High-frequency hearing loss occurs when the sensory hearing cells in your cochlea die or are damaged. These hair cells are responsible for translating the sounds your ears collect into electrical impulses, which your brain eventually interprets as recognizable sound. High-frequency sounds are perceived in the lower part of the cochlea, while the hair cells that perceive low-frequency sounds are located near the top. Because of this, hearing loss typically affects the higher frequencies before it affects the lower frequencies.
Causes of high-frequency hearing loss
People of all ages can be affected by high-frequency hearing loss — and the reasons causing it are just as varied.
- Noise – According to the National Institute on Deafness and Other Communication Disorders (NIDCD), more than 10 million Americans have suffered irreversible damage due to noise-induced hearing loss (NIHL), with 30-50 million more exposed to dangerous noise levels on a daily basis. The damage can occur as the result of a one-time, loud exposure to noise, such as a gunshot or explosion, or can occur over time with constant exposure to noise louder than 85 decibels (dB).
- Aging – Hearing loss that occurs as the result of the aging process is called presbycusis. Because this is a slow process which usually affects both ears equally, it’s often difficult to notice. One of the first signs is the inability to understand speech in noisy environments and high-frequency sounds.
- Genetics – Check your family history. If your relatives developed high-frequency hearing loss, you may be genetically predisposed to developing it as well.
- Ototoxicity – Some types of drugs are ototoxic, meaning they are harmful to your hearing health. Some of the more common ototoxic drugs include salicylates (aspirin) in large quantities, drugs used in chemotherapy treatments and aminoglycoside antibiotics.
- Diseases – Meniere’s disease, which affects the inner ear, often occurs between the ages of 30-50 and may include fluctuating hearing loss, tinnitus and vertigo or intense dizziness. In children, chronic otitis media (commonly known as an ear infection) can lead to hearing loss if it’s untreated. If your child has chronic, recurring ear infections, please consult your pediatrician or an otologist for medical treatment before it affects their speech and language development.
Preventing high-frequency hearing loss; Hearing Protection
High-frequency hearing loss isn’t reversible, but in some cases, it is preventable. One of the best prevention techniques is to protect your hearing against exposure to noise – especially noise louder than 85 decibels (dB). Keep the volume turned down on your personal electronic devices and wear hearing protection whenever you anticipate being in a noisy environment, such as at the shooting range, when riding snowmobiles, or when attending a live concert or sporting event. Inexpensive earplugs are available at the local drugstore for occasional use. Or if you are always exposed to high-frequency noise over a long period of time, you may want to consider customized molded hearing protection such as dB Blockers. If you regularly engage in very noisy hobbies, consider investing in specialized hearing protection such as noise-canceling headphones or custom-made earmolds which can be purchased through many hearing healthcare professionals.
As you can see, high-frequency hearing loss can result from many different underlying causes, most of which are not medically treatable. Fortunately, high-frequency hearing loss can be corrected with hearing aids in most cases.
If you suspect you have hearing loss, make an appointment to see a hearing health professional to get your hearing tested. If your tests indicate you have hearing loss which can be treated with a hearing device, such as hearing aids or cochlear implants, be sure to follow through with treatment recommendations. Research indicates most hearing aid wearers are satisfied with their hearing devices and enjoy a richer quality of life than those who decide not to seek treatment.
Contributed by Debbie Clason, staff writer, Healthy Hearing