Low-Frequency Hearing Loss: Learning the Causes and Treatment

A relatively rare type of hearing loss is known as low-frequency hearing loss or reverse-slope hearing loss. Low pitch hearing loss is much less common than high-frequency hearing loss but can be equally unsettling and debilitating.

Regardless of the type of hearing loss you have, you should seek out treatment immediately. Here is everything you need to know about low-frequency hearing impairment and what to do if you’re experiencing symptoms.

What is Low-Frequency Hearing Loss?

Low tone hearing loss is a type of hearing loss defined by an inability to hear low-frequency sounds. Sufferers of low-frequency hearing loss may struggle to hear sounds such as an airplane flying overhead or the hum running appliances.

Generally, most incidents of low-frequency hearing impairments are irreversible, but it depends on the category of hearing loss: sensorineural or conductive.

Sensorineural

Sensorineural hearing loss occurs when damage has been caused to the sensitive stereocilia inside the ear. It could also arise due to problems with the cochlea or auditory nerve. This type of hearing loss most commonly occurs due to noise exposure and age. While there are treatments available, the condition is irreversible.

Conductive

Conductive hearing loss occurs due to a problem with the middle ear. Obstructions and infections can lead to conductive low tone hearing loss.

In some cases, doctors may be able to treat your hearing loss with antibiotics or surgery.

Symptoms of Low-Frequency Hearing Loss

 The most common symptom of this form of hearing impairment is the inability to hear sounds below frequencies of 2,000 Hz.

For example, sufferers may be unable to clearly hear a deep voice. Other examples of sounds that become difficult to hear include:

  • Refrigerator humming
  • Thunder
  • Vehicle engines
  • Vowel sounds
  • Bass sounds

Interestingly, people with low pitch hearing loss may have superior speech skills because they tend to have a higher perception of high-frequency sounds.

What Causes Low-Frequency Hearing Loss?

The main low-frequency hearing loss causes can stem from two areas: the inner ear or the middle ear. Depending on where the problem lies, it may be treatable

Sensorineural Low Pitch Hearing Loss

Sensorineural hearing loss often occurs in the inner ear and is generally considered irreversible. The primary sensorineural low-frequency hearing loss causes are:

  • Meniere’s Disease – Fluid buildup inside the inner ear. Often accompanied by vertigo and tinnitus. Cause unknown.
  • Genetics – Wolfram syndrome causes low tone hearing loss. This type of genetic mutation is considered extremely rare.
  • Low Cerebrospinal Fluid Pressure – Low fluid pressures in the brain may happen due to spinal anesthesia. Headaches, nausea, and tinnitus may accompany this condition.
  • Aging – Statistically, older Americans are more likely to suffer from this type of hearing loss.
  • Viral Infections – Viral infections like Ramsay Hunt Syndrome may also make hearing low frequencies difficult.
  • Sudden Hearing Loss – Certain types of sudden hearing loss can disproportionately impact low pitch sounds.

Conductive Low Pitch Hearing Loss

Conductive types of hearing loss typically originate in the middle ear. Sometimes, these conditions can be improved with surgery or medical intervention. The major causes of conductive low pitch hearing impairment include:

  • Secretory Otitis Media – Fluid accumulation within the middle ear. Typically caused by infections.
  • Otosclerosis – Overgrowth of the stapes bone within the middle ear. More common in women.

Diagnosing Low-Frequency Hearing Loss

An audiologist will use a low-frequency hearing loss test to diagnose you. These hearing tests take place in a soundproofed booth. A low-frequency hearing test usually takes no more than a few minutes. An audiologist will display your results via an audiogram, which is a chart that shows your level of hearing. The reverse-slope pattern means you have a low tone hearing impairment.

Should You Take a Low-Frequency Hearing Loss Test?

Most people fail to notice a decline in their hearing. Experts say that the stereocilia, the sensitive structures in your ear, could experience up to 50% damage before a noticeable change in hearing occurs. If you have any concerns, you should get tested.

It is easy to book a free hearing test at a center near you with EarPros. Appointments only take a few minutes, and you could get the low-frequency hearing loss treatment you need

How to Treat Low-Frequency Hearing Loss

With hearing loss, low-frequency sounds may be one of the first signs of general hearing impairment.

Depending on the reason for your hearing loss, the treatment will differ. For example, if you have an overgrowth of the stapes bone, surgery could resolve the issue. Likewise, an ear tube could resolve a build-up of middle ear fluid.

Alternatively, you may be prescribed hearing aids that can boost low-frequency sounds. An audiologist will program your hearing aids to amplify low-frequency sounds without impacting your ability to hear higher frequencies.

Conclusion

It is unnerving to be unable to hear lower pitches, especially if the change happens suddenly. There are treatments available, but it is important to book an appointment with your local audiologist to take a formal hearing test.

We take pride in helping people tackle their hearing impairments. Contact EarPros to schedule your free hearing test now.