Home | RSS

Links
Parenting Guide
WebMD Health Information
Health and Biology

Deafness types and treatment

Oct 09, 2011 > Various
Deafness is term used to describe complete or partial loss or absence of the ability to hear.

There are three major types of deafness

Conductive deafness is caused by a defect in the outer or middle ear, which prevents normal transmission of sound. It may be present at birth as the result of an inherited defect, an abnormality in development, or an infection of the fetus in the womb. It may be produced by an injury that perforates the eardrum or that breaks up the linkage of three tiny bones—hammer, anvil, and stirrup—that normally transmit sound from the eardrum through the middle ear to the inner ear. Inflammation of the middle ear, a condition known as otitis media, is another important cause of conductive deafness. Infection from an upper respiratory tract ailment, such as strep throat or the flu, can produce a buildup of pus in the middle ear so great that it ruptures the eardrum. Also, a plugged eustachian tube (the tube leading from the back of the throat to the ear) mat trap fluid in the middle ear, creating temporary deafness. Conductive deafness in the middle and later years is most often caused by otosclerosis. In this inherited condition, new spongy bone grows over the stirrup bone, preventing it from vibrating when sound travels to it through the hammer and anvil bones.

Deafness types and treatment Sensorineural deafness is a type of hearing loss that occurs because of damage to the structures of the inner ear, to the auditory nerve carrying sound messages to the brain, or the hearing center of the brain itself, located in the temporal lobe. It may be due to a head injury during birth, the effects of a woman’s rubella infection on her unborn baby, a skull fracture affecting the inner ear or the auditory nerve, fever, bacterial or viral infections (such as mumps or meningitis), tertiary (final stage) syphilis, Meniere’s disease, tumors, multiple sclerosis, a hemorrhage or blood clot in the inner ear, drug side effect, normal aging, prolonged or repeated exposure to intense noise, or edema(fluid buildup) caused by a thyroid deficiency. Most sensorineural deafness is not nerve deafness, the popular term for it. It is usually sensory deafness, caused by defects in the structure of the inner ear, especially in the cochlea and its organ of Corti. The cochlea contains sensory cells that convert sound waves into electrical impulses, which are transmitted via the auditory nerve to the brain.

Mixed deafness is a relatively common condition. It is a combination of conductive and sensorineural deafness.

People with pure conductive deafness simply need louder volume to hear all sounds. Those with defects in the inner ear usually can hear low-pitched sounds more easily than high-pitched sounds, and some sounds may be distorted. When there is damage to the hearing center in the brain, the person may be able to hear sounds, but has trouble recognizing them and understanding words (this problem can also occur with the other types of deafness).

Deafness Diagnosis

When hearing loss is suspected, a complete examination of the ears, nose, an throat is necessary to identify infections or abnormalities that may be present. Infections of the adenoids or tonsils, as well as sinus of nasal infections, may be linked to ear infections.

Testing of hearing is important for all ages, but especially for infants. Many times, partial deafness in a baby is not discovered until the child fails to learn to talk, a direct result of the hearing loss. Babies who were born prematurely or ill or whose mothers had certain viral infections, such as rubella, during pregnancy are in special need of testing.

Deafness Treatment

Although inborn hearing defects usually cannot be corrected, deaf children can be helped to deal with their handicap. Starting very early, they can be fitted with hearing aids and can be instructed in lipreading, speaking, and sign language.

Surgery to correct conductive hearing loss includes operations to replace the stirrup bone or all three tiny bones with tissue or synthetic material, to repair a punctured eardrum, and to clean a chronically infected middle ear.

A hearing aid can often help to restore hearing. However, one should be purchased only after thorough testing by a specialist in audiometry, who can suggest the most appropriate type. Classes in lipreading and listening can also be helpful.

Deafness Prevention

It is far easier to prevent deafness than to cure it. Antibiotics have made it possible to eradicate most of the middle ear infections that have been the major source of conductive hearing loss in children. Middle ear problems are also sometimes eliminated by treating allergies that cause the eustachian tubes to close up or by removing infected adenoids. Nerve deafness caused by continued exposure to intense industrial noise, gun shots, rock music, or aircraft engines may be avoided by wearing earplugs or other ear protectors. Some lost hearing may return after several months of relief form intense sound. Medications that can cause hearing loss, including some antibiotics and certain diuretics (drugs that stimulate the production of urine), need to be used with caution, and signs of hearing loss should be brought to a doctor’s attention as soon as they are noticed.

That's some stuff about Deafness types and treatment
Reference : (Chasnoff, Ira J, Jeffrey W. Ellis, Zachary S. Fainman. Family Medical & Health Guide .Publications International, LTD (1991) : 139-141)


Other Articles

Deafness types and treatment #0US judge blocks graphic warning on cigarette
U.S. District Judge Richard Leon, in a 29-page ruling Monday, granted the preliminary injunction because he believed there was a "substantial likelihood" the cigarette companies ultimately would win "on the merits of their position that these mandatory graphic images unconstitutionally compel speech."
Deafness types and treatment #1Inhalants Cause Allergy
A large number of substances reach the body through breathing or inhalation. The fact that they are introduced through inhalation does not necessarily indicate that the symptoms will be only respiratory; for example, inhaled substances can produce hives, and conversely foods may cause asthma. Air-borne pollen and molds produce seasonal hay fever. house dust is a very important inhalant antigen. animal hairs are frequent offenders, and for this reason allergic patients should avoid contact with or exposure to animals regardless as to whether they are skin sensitive to their. Contact with horses, especially riding behind a horse, or using horse blankets or being in the company of people who wear riding habits may produce severe allergic symptoms.
Deafness types and treatment #2Diverticulitis Diet Foods to Avoid
A low residue diet is one that consists of a daily intake of no more than 10 grams of fiber. While on this diet for an extended period of time it is recommended that a multi-vitamin or mineral supplement be taken daily. This ensures that minerals and vitamins lost while on the low residue diet are made by taking supplements. Until recently, many doctors suggested avoiding foods with small seeds because it was believed that particles could lodge in the diverticula and cause inflammation. However, this is now a controversial point and no evidence supports this recommendation. So the seeds in tomatoes, zucchini, cucumbers, strawberries and raspberries, as well as poppy seeds, which are part of your diverticulitis diet, are generally considered harmless.
Deafness types and treatment #3Allergic Headache
Certain types of headache are allergic in origin. In these cases patients develop headaches of variable severity when exposed to substances to which they are allergic. These may be food or inhalants. The symptoms vary with the person. As a rule, the pain is deep and sometimes throbbing, or it may acquire the characteristics of so-called sick headache or migraine. Not all instances of migraine are allergic in nature. When one realizes that chronic headache interfere with the patient's happiness and productivity, a serious effort must be made in each case to discover it cause. It must by no means assumed that every case of headache is allergic, because most frequently the cause of headache is something other than allergy. In the case of chronic recurrent headache one must always rule out some serious systemic condition like kidney disease, anemia, infection, or brain
Deafness types and treatment #4TLC Diet Menu plan and GuideLines
The Therapeutic Lifestyle Changes (TLC) Diet was devised by the U.S. government's National Cholesterol Education Program (NCEP) to give guidance to people who have blood cholesterol problems. The TLC Diet doesn't have a recommendation for how many calories people with cholesterol problems should eat daily because calories don't affect cholesterol levels directly.
Deafness types and treatment #5Failure patterns of combined modality treatment in lung cancer
By C.J. Hoekstra, H. Rijna, E.F. Smit, J.C. van Mourik, P.E. Postmus, A.A. Lammertsma, O.S. Hoekstra 17 Background: Patients with locally advanced non-small cell lung cancer (NSCLC) may be treated with induction chemotherapy (IC) followed by surgery with curative intent.
Deafness types and treatment #6What is the Best Treatment for Acne Scars
Acne scar treatments have had a long and complicated history. Traditionally, the most famous method for getting rid of the scars left behind by acne was a harsh process known as "dermabrasion." Now if you've never heard of dermabrasion, let me put this into perspective for you. "Derm" comes from the Greek word "Dermis", which means skin. "Abrasion" is the process of wearing down or rubbing away by means of friction. Put the two together and what do you get? Dermabrasion.
Deafness types and treatment #7What is Pescatarian Definition and Recipes
Are you looking for about what is pescatarian? and what are pescatarian recipes? A pescatarian is a person who refrains from eating land animals and birds, but includes fish, mollusks, and crustaceans in addition to fruits, vegetables, plants, legumes, nuts, and grains. This is a common form of “vegetarianism” and is generally considered a very healthy diet. It can also be a stepping stone to full vegetarianism. Pescatarians can enjoy lowfat protein sources that are high in fish oils, which contain Omega 3 fatty acids—the “good fats” that reduce inflammation.
Deafness types and treatment #8FOODS CAUSE OF ALLERGY
People may be sensitive to single or to multiple foods. Here again are some foods which are botanically related, so that if a patient is sensitive to one food in this group, he sensitive to the others. Examples of this may be cited in the case of cabbage, Brussels sprouts, and cauliflower. Many of the sea foods and fresh water fish are thus similarly related; so that if a patient is sensitive to one type of fresh water fish, he is likely sensitive to the others. The most frequent allergy-producing foods are common foods, namely, milk, eggs and wheat, fish and nuts. It is unfortunate that this is the case because these are also essential foods, and this avoidance becomes a serious problem in undernourished people and in children of infants. When a patient is definitely sensitive to one or two foods only, it is not difficult for him to realize it himself. The difficulty arises, however, when he is allege to many foods. Under these circumstances he is likely to become confused and then he needs a physician's help. Allergy to a food may be of various degrees of severity. Symptoms of asthma or hives may not arise if only one food is eaten if the sensitivity is mild. However, if a number of such foods are ingested at one time, the symptoms may be pronounced. Another factor which is important in connection with the production of symptoms is the readiness with which a food is absorbed from the gastrointestinal tract. The quicker the absorption, the more rapid will the symptoms develop after eating.
Deafness types and treatment #9Misophonia symptoms and treatment
What is Misophonia definition? Misophonia – literally the hatred of sound -can be defined as a hypersensitivity to background sounds or visual stimuli that are generally ignored by other people. More importantly than the individuals inability to block out the offending stimuli or “trigger” is the acute negative emotional response experienced as a direct result of being in contact with a trigger. Misophonia commonly occurs along with hyperacusis and/or tinnitus, but can appear by itself. One of the tools we use to treat misophonia at AC Associates is called Tinnitus Retraining Therapy (TRT). TRT recognizes the specific involvement of various components of the auditory pathways of the nervous system in occurrences of tinnitus, hyperacusis and misophonia. For treatment of misophonia, TRT uses a method based on the active removal of conditioned reflexive responses to sound, allowing patients to feel like themselves again.
Deafness types and treatment #10Chronic Hives in Children
Hives are harmless skin allergic reactions which might irritate a child a great deal. They appear as raised pale or red colored skin welts. Hives may also appear as mosquito bites that keep changing their shapes and even their locations. Hives in kids are generally found on arms, legs, back and torso. Children may find the itching associated with hives quite unbearable!
Deafness types and treatment #11What is lisfranc injury and how to recovery
A Lisfranc (midfoot) injury is a significant injury that often has a prolonged recovery time. Fracture of the midfoot bones and/or disruption of the midfoot ligaments (Figure 1) leads to pain, swelling, and often an inability to weight-bear. During normal standing and walking the ligaments of the midfoot are subject to forces that are 2-3 times body weight.
Deafness types and treatment #12How to Lose Weight Fast for Teenage Girl without exercise
They told him of a party or some event a few weeks in advance and need to lose a few pounds? Or maybe going to go on holiday and want to look spectacular in the photos. Fortunately there are some tricks to lose those few extra pounds in no time.

Copyright (c) 2011 by DRZ
Privacy Policy | Contact Us