Sensorineural Hearing Loss: Causes, Symptoms & Treatment Options
TL: DR; This blog is written for people experiencing hearing difficulties, tinnitus, or trouble understanding speech; parents concerned about a child’s hearing; and family members seeking treatment options for sensorineural hearing loss. Sensorineural hearing loss occurs when the inner ear or auditory nerve is damaged, making it a more permanent type of hearing loss than conductive hearing loss. Common causes include aging, long-term noise exposure, infections, ototoxic medicines, head trauma, family history, Meniere’s disease, acoustic neuroma, and sudden unexplained hearing loss. Early signs include difficulty hearing in noisy places, asking people to repeat, increasing TV or phone volume, muffled hearing, tinnitus, and trouble understanding phone conversations. Treatment depends on the severity and may include hearing aids, cochlear implants for severe cases, auditory rehabilitation, tinnitus support, home visits, video consultations, and long-term aftercare. Hearing loss isn’t necessarily silence. Many individuals perceive it as “mumbling,” “can’t hear in a crowd,” or “unclear speech. Sounds can still be heard, but it can be a challenge to understand conversations, particularly in loud environments. A common cause of this is sensorineural hearing loss. Typically occurs when the inner ear/hearing nerve is damaged. It can arise gradually over time, as a result of age, chronic exposure to noise, various diseases, or other health conditions. The change is usually slow, and the individual neglects it for months or even years. Knowing what sensorineural hearing loss is can help you make the appropriate move at the right time. If you have a proper hearing test, your audiologist will be able to determine the level of hearing loss, explain the results, and provide information on the best hearing solutions. Our audiologists frequently evaluate and aid patients with sensorineural hearing loss at Resonnocare. This guide describes what it is, why it occurs, how it is assessed, and how you might hear better and communicate more effectively. What Is Sensorineural Hearing Loss? Sensorineural hearing loss is caused by damage to the inner ear (cochlea) or to the auditory nerve, which transmits sound signals to the brain. While conductive hearing loss, which affects the outer or middle ear, can be caused by blockage or structural problems, sensorineural hearing loss usually reflects permanent damage within the inner ear or auditory pathway. The tiny hair cells within the cochlea convert sound vibrations into electrical signals. If these hair cells have been damaged, they will not regenerate. Hence, sensorineural hearing loss is sometimes called “permanent,” but in many instances, it can be managed effectively with the proper support. Some individuals have mixed hearing loss, which combines sensorineural and conductive hearing loss. It is important to have a proper diagnosis and a hearing assessment to determine the type of hearing loss you have. What Causes Sensorineural Hearing Loss? There is no one cause. Sensorineural hearing loss can have several causes, and more than one factor may contribute. The most frequent cause is age-related hearing loss (presbycusis). The hair cells in the cochlea begin to deteriorate with age. Usually, it starts out with problems hearing high-pitched sounds and gradually worsens over time. Another major cause is noise exposure, especially for individuals who are exposed to high levels of noise at work (e.g., in factories, construction sites, music venues) or who listen to earphones at high volume for long periods. Some cases are congenital, while others develop later in life without an obvious cause. Infections such as meningitis, mumps, measles, or other serious viral diseases may affect the inner ear, sometimes very quickly. Some drugs may have a side effect of damaging the hair cells in the inner ear (ototoxic). Sudden sensorineural hearing loss is an emergency, usually affecting one ear and occurring without warning. If you have a sudden, unexplained hearing loss, please seek medical attention on the day you notice it. Less common causes include autoimmune disorders, Ménière’s disease, acoustic neuroma, and head trauma. What Are the Early Signs of Sensorineural Hearing Loss? Early symptoms are sometimes not noticeable, and that’s part of the reason people often put off getting help. Typical signs are: Trouble understanding what is said when there is background noise, such as in a restaurant or with a family group. Repeating words and sentences many times Having an easier time hearing lower-pitched voices as compared to higher ones Increasing the volume of the TV or phone more than usual. Persistent ringing, buzzing, or hissing in one or both ears (tinnitus). A feeling that sounds are muffled or hard to hear when they are loud enough Struggling to understand phone calls or conversations. Difficulty with phone conversations or understanding phone calls. Children might have speech delays, have trouble attending classes, or hear words they don’t understand. A hearing evaluation is always recommended if a teacher has had concerns about listening or attentiveness. For a full overview of ear-related symptoms and when to seek help, visit our ear symptoms and conditions page. How Is Sensorineural Hearing Loss Diagnosed? A comprehensive hearing evaluation by a qualified audiologist is used for diagnosis. It usually takes the form of: Pure Tone Audiometry (PTA): The audiologist presents a series of tones to you through headphones and plots your hearing levels on an audiogram (chart). In sensorineural hearing loss, both air and bone conduction thresholds are reduced, typically without a significant air-bone gap. Speech audiometry: This test determines the clarity of understanding of spoken words at varying volumes, especially to plan appropriate management. Tympanometry: This is not the primary diagnostic tool for sensorineural hearing loss, but it can be used to exclude middle ear involvement. At Resonnocare, we offer hearing care for all ages, from infants and children to older adults. Accurate diagnosis is the foundation of everything we do, and our audiologists take the time to explain your results in plain language. Treatment and Management Options for Sensorineural Hearing Loss Here are the common treatment and management options: Hearing Aids Hearing aids are the most common support option for sensorineural hearing loss. Modern hearing aids are small, comfortable, and designed to make speech and sounds clearer. They
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