Exposure to loud noises
Hearing impairment
Typical permanent hearing loss is due to damage caused to the eardrum, which can include scaring or perforation, normally caused by exposure to loud noises. Typical temporary hearing loss is normally due either to waxy buildup on the outside of the eardrum (DO NOT TRY TO CLEAR THIS YOURSELF), or a buildup of pressure on the inside wall of the eardrum. There are countless other types of temporary and permanent hearing loss and reduction, consult a medical professional if you even suspect your hearing may be degrading. Many types of hearing loss are preventable if caught in the early stages.
Hearing impairment is any loss of hearing for a variety of reasons. It refers to a condition that causes someone not to hear as well as someone with normal hearing. It does not refer to the degree of hearing loss, the cause of hearing loss or the indication that someone should wear a hearing aid. Not all causes of hearing loss indicate the need for a hearing aid...some may be corrected medically. If you ask others to repeat, find yourself turning up the tv, missing out on the punchline of a joke, missing out on important meeting facts, you might be experiencing some degree of hearing impairment.
Conduction hearing impairment refers to hearing problems that originate in the outer or middle ear. This type of impairment occurs when sound waves cannot efficiently travel through the ear canal to the eardrum or the ossicles (small bones in the middle ear). Common causes include earwax blockage, fluid accumulation, or structural issues. Unlike sensorineural hearing loss, conduction hearing impairment often can be treated or improved with medical intervention.
Deafness means inability to hear. There are many causes of impaired hearing. Most of them are not able to be treated with medication, but other treatments are available.
Permanent neural hearing loss most often results from damage to the acoustic nerve and the parts of the brain that control hearing. Strokes, multiple sclerosis , and acoustic neuromas are all possible causes of neural hearing loss.
Complete lack of hearing is called deafness. Various causes of deafness are defined by specific medical conditions (e.g. presbycusis - old age hearing loss). The term for less than complete deafness is "hearing impairment".
Cochlear damage refers to injury or impairment to the cochlea, the spiral-shaped structure in the inner ear responsible for converting sound vibrations into electrical signals that are sent to the brain. This damage can result in hearing loss or problems with auditory processing. Causes of cochlear damage may include exposure to loud noise, aging, infections, or genetic factors.
Nerve damage leading to hearing impairment can be caused by various factors, including exposure to loud noises, which can damage the hair cells in the inner ear. Additionally, medical conditions such as diabetes, multiple sclerosis, or viral infections (like meningitis) can affect the auditory nerve. Other potential causes include traumatic injuries to the head or neck, certain medications (ototoxic drugs), and aging, all of which can disrupt the transmission of sound signals to the brain.
An ear infection can cause minimal swelling to moderate swelling around the ear, and can also cause hearing loss that can become permanent.
the central nervous system.
Nerve cells can typically survive without a new blood supply for about 4-6 minutes before irreversible damage occurs due to oxygen and nutrient deprivation. After this time, cell death may occur, leading to permanent neurological impairment.