Understanding the Causes of Acquired Hearing Loss in Adults

Acquired hearing loss refers to hearing impairment that develops after birth, either gradually over time or suddenly. This differs from congenital hearing loss, which is present from birth. In the Philippines, research indicates that 14.7% of adults aged 18 to 65 experience acquired hearing loss. This prevalence increases significantly in older adults, with 49.1% of those over 65 being affected by hearing loss.

With this high prevalence, especially among older adults, it’s crucial to know what causes acquired hearing loss in the Philippines. This awareness can help mitigate its effects and maintain ear function.

1. Exposure to Loud Noise

The most common cause of acquired sensorineural hearing loss in adults stems from exposure to loud noise. Prolonged exposure can harm delicate hair cells in the inner ear, leading to sensorineural hearing loss, often referred to as nerve deafness.

The effects of sensorineural hearing loss can manifest immediately or gradually over time. Everyday appliances like hair dryers, food processors, and recreational activities such as rock concerts or high-volume music listening contribute significantly to this risk.

As such, it’s imperative to take proactive measures when signs of hearing loss emerge to preserve hearing and minimize the risk of further damage. This includes using earplugs in noisy environments and keeping the volume at safe levels. Raising awareness and taking these precautions are key to mitigating the impact of noise on ear health and preventing further hearing loss.

2. Physical Trauma

Physical trauma to the ear or head is another significant cause of acquired hearing loss. Severe head injuries can damage the inner ear structures or the auditory nerve, which are critical for transmitting sound signals to the brain. Additionally, these injuries can affect the middle ear, disrupting the delicate balance of the ossicles (tiny bones in the middle ear) and impairing the mechanical transmission of sound.

The extent of hearing loss from physical trauma can vary, ranging from temporary impairment to permanent damage, depending on how severe the injury is and where the person was hit.

Inserting objects into the ear canal is another common cause of physical trauma that can lead to hearing loss. This practice can perforate the eardrum, causing pain and significant hearing impairment. Damage to the ossicles from such trauma can further exacerbate hearing loss, as these tiny bones amplify and transmit sound vibrations to the inner ear.

Preventive measures are essential for safeguarding ear health and preventing trauma-induced hearing loss. This includes avoiding inserting objects into the ear and wearing protective headgear during activities that risk head injury,

3. Swimmer’s Ear

Swimming is a popular activity in the Philippines, both for recreation and as a way of life. However, it can sometimes cause ear problems, particularly when swimmers come into contact with contaminated water. If water enters the ear and remains trapped, it can lead to an ear infection known as “Swimmer’s Ear” or otitis externa. Unlike the common childhood middle ear infection, this condition affects the outer ear canal and can cause significant pain and discomfort.

Swimmer’s Ear occurs when bacteria (and occasionally fungi or viruses) from contaminated water get into the ear and multiply in the ear canal, leading to infection and, in severe cases, acquired hearing loss.

To protect yourself, it’s essential to wear earplugs or a bathing cap while swimming. After swimming, be sure to dry your ears thoroughly with a towel and avoid inserting objects like cotton swabs into the ear canal, as it could exacerbate or increase your risk of infection. If an infection does occur, it is essential to seek medical attention promptly.

4. Existing Medical Conditions

Pre-existing medical conditions are what can contribute to sudden or gradual hearing loss. The most common scenarios that could cause this are the development of a middle ear infection, the use of ototoxic medications, or even experiencing severe health conditions.

Infections: Middle ear infections (otitis media) occur when fluid accumulates behind the eardrum, causing inflammation and infection. If left untreated or if they become recurrent, these infections can inflict lasting damage to the ear’s structures, potentially causing hearing loss.
Ototoxic Medications: Certain medications, including specific antibiotics and chemotherapy drugs, pose risks to the inner ear, potentially causing hearing loss. While crucial for treating various conditions, it’s essential that the intake of medicines is monitored by a healthcare professional to manage and mitigate the risk of hearing loss.
Other Conditions: Other health conditions, such as diabetes, high blood pressure, autoimmune diseases, and tumors, can also potentially affect hearing. As such, when symptoms of hearing loss start to manifest while you are living with a pre-existing condition, make sure to consult your doctor right away for early intervention.

Symptoms of Acquired Hearing Loss

Recognizing the signs of acquired hearing loss is crucial for early intervention. Common symptoms include:

Muffled Sounds: Feeling like sounds are less clear or distant.
Difficulty Understanding Speech: Struggling to follow conversations, especially in noisy environments.
Tinnitus: A ringing, buzzing, or roaring sound in the ears.
Sudden Hearing Loss: A rapid decline in hearing ability, often in one ear.

When Experiencing Symptoms of Acquired Hearing Loss, Get Checked

If you are experiencing symptoms of acquired hearing loss, it is crucial to undergo a hearing assessment in the Philippines to determine the extent and cause of your hearing impairment. Early identification can help you cope with the effects of hearing loss by allowing for timely intervention, such as the fitting of appropriate hearing aids.

Know that professional hearing assessments and hearing aid fitting services are available to help you manage hearing loss effectively and maintain your overall ear health. Avoid waiting until your condition progresses; get checked as soon as you notice any signs of hearing difficulty.