Thursday, September 14, 2017

Hearing Loss: Causes and Symptoms


Hearing Loss: Causes and Symptoms

Causes and Symptoms of Hearing Loss

For people with a hearing loss is severe, the world is a very quiet place. The conversation faded to a whisper and the music became vaguely like mumbling.

Anyone who has a severe hearing loss or severe enough will know how these conditions can isolate them. If you can not hear, then you can not take part in the conversation, you can no longer be active participants in the world around you.

Diagnosis and management of hearing loss can significantly improve your quality of life. As soon as you start experiencing signs of hearing loss, visit your doctor for an evaluation.

In this article, you will learn about the causes and types of hearing loss is severe, and what are the signs to watch out for so you can get medical help as soon as possible.
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Signs of Severe Hearing Loss

If you lose your hearing, either suddenly or over time, you will have difficulty in summing up the contents of the conversation. The sound will be muffled and slowly fade away.

Depending on the cause of your hearing loss, you may also experience:
  • Pain in one or both ears
  • Dizziness, vertigo
  • Ringing in the ears (tinnitus)
  • Pressure or feel full on one or both ears
Often, people with severe hearing loss to be anti-social because they are embarrassed to ask family and friends to repeat what they say.

Determining the Level of Hearing Loss

Your doctor will probably perform a hearing test called an audiogram. Doctors determine the degree of hearing loss by looking at various decibel (dB) - a measure of the intensity of the sound - you can hear. People with perfect hearing can hear sounds from all different intensities. People with severe hearing loss can only hear very loud noise.

Normal hearing considered to be in the range of 0 to 15 dB - that indicates the intensity of the softest in which sound can be heard. People with normal hearing are able to distinguish sounds vaguely like a human breath, which is approximately 10 dB.

Mild hearing loss is in the range of 26 to 40 dB, and a range of hearing loss was in the range of 41-55 dB. Hearing impairment is considered severe when it is in the range 71-90 dB. People with severe hearing loss have difficulty hearing speech, though they can hear a loud noise, like the sound of a passing truck or plane to take off.

Type Hearing LossThere are three main types of hearing loss:
  1. Conductive hearing loss occurs from problems in the ear canal. Eardrum or middle ear can not effectively transmit sound to the inner ear. This problem can be caused by an ear infection, tumor, or objects (such as wax buildup) in the ear.
  2. Sensorineural hearing loss is often caused by damage to the hair cells in the ear in this part. Other potential causes include damage to the nerves or brain 8. The type of hearing loss is often caused by age-related changes in neural and sensory cells of the inner ear.
  3. Hearing loss is a combination of a mixture of conductive and sensorineural hearing loss, which means that there may be damage in the outer or middle ear and the inner ear (cochlea) or the auditory nerve. Hearing loss can be caused by a mixture of head injuries, chronic infection, or congenital abnormalities
Hearing loss can affect one or both ears. It can happen suddenly (acute) or gradually worsen over time. If you experience sudden hearing loss, see your doctor immediately.

Causes of Hearing Loss

In normal hearing, sound waves enter the outer part of your ear. Sounds then traveled through the ear to the cochlea, which is a tube filled with fluid. When the liquid vibrate, thousands of fine hairs also move and transform sound vibrations into nerve impulses. Those impulses are then sent to the brain where they are processed into sound that you can recognize.

Hearing loss occurs when there is a problem with the structure of the ear involved in the hearing process. Each of these conditions can cause severe hearing loss:
 
  • Age. In the elderly, the structures in the ear becomes less elastic. Fine hairs damaged and less able to respond to sound waves. Hearing loss can develop over several years.
  • Loud noise. Exposure to loud noise - for example, from power tools, aircraft, firearms, or from listening to loud music on earphones can damage the hair cells in the cochlea. The severity of damage depends on the level of loudness and duration to hear the voice.
  • Ear infections. When an ear infection occurs, fluid accumulates in the middle ear. Usually hearing loss due to ear infection, a slight and transient. However, if an ear infection is not treated, they can lead to severe hearing loss and long-term.
  • The hole in the eardrum. Ear infections, a loud noise, head trauma, or strong pressure in the ear while flying in a plane or scuba diving can make a hole in the eardrum - a membrane that separates the ear canal and the middle ear. It usually causes mild or moderate hearing loss unless there is some other problem.
  • Disease or infection. Measles, mumps, meningitis, and Meniere's disease are examples of some of the conditions that can cause hearing loss.
  • Tumor. Tumors, both benign and malignant can cause severe hearing loss. These include acoustic neuroma (vestibular schwannoma) and meningioma. People who have a tumor may also experience numbness or weakness of the face and ringing in the ears.
  • A foreign body in the ear. When the object stuck in the ear, they can block the hearing. Earwax - substance, thick sticky which usually prevents bacteria and other foreign substances from entering the ear - sometimes can accumulate and harden in the ear, turn off the ability to hear.
  • Ear defects. Some people are born with abnormal ear structure, which prevents them can hear well
  • Trauma. Injuries such as skull fracture or a punctured eardrum can cause severe hearing loss.
  • Drugs. Several types of drugs, including the aminoglycoside class of antibiotics (streptomycin, neomycin, kanamycin), aspirin, drug chemotherapy (cisplatin, carboplatin), Vicodin (in bulk), macrolide antibiotics (erythromycin) can cause hearing loss. Sometimes these effects are temporary and hearing will return after you stop taking the drug, but in many cases hearing loss becomes permanent.
  • Gen. Scientists have identified certain genes that make people more susceptible to severe hearing loss, especially age-related hearing loss. Genetic hearing loss often begins with hearing loss are diagnosed at birth

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