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Occupational hearing loss is damage to the inner ear from noise or vibrations due to certain types of jobs or entertainment.
Hearing loss - occupational
Causes, incidence, and risk factors
Occupational hearing loss is a form of acoustic trauma caused by exposure to vibration or sound. Sound is heard as the ear converts vibration from sound waves into impulses in the nerves of the ear.
Sounds above 90 decibels (dB, a measurement of the loudness or strength of sound vibration) may cause vibration intense enough to damage the inner ear, especially if the sound continues for a long time.
90 dB -- a large truck 5 yards away (motorcycles, snowmobiles, and similar engines range from 85 - 90 dB)
100 dB -- some rock concerts
120 dB -- a jackhammer about 3 feet away
130 dB -- a jet engine from 100 feet away
A general rule of thumb is that if you need to shout to be heard, the sound is in the ra...
When it is quiet in the house, I can practically hear “a pin drop” or the sound of the cats paws walking across the kitchen floor. My hearing is very good. Most of the time.
However, as a musician, I have been exposed to enormously dangerous sound levels during various concert and rehearsal settings. Horn players often sit in front of the percussion, trumpet, or trombone sections, a situation which can lead not only to pain but to hearing loss.
When one experiences prolonged exposure to sounds greater than 85 decibels, the tiny hairs in the ear which help transmit sound can become permanently damaged. So I have had a good excuse for any “what did you say?” moments.
But I’ve noticed something which has changed since I developed MS. I can’t hear well although I have extraordinary hearing. Doesn’t make sense, I know, but it’s true.
Let me describe what it feels like. Sound waves traveling thr...
Dear Dr. Borigini, Is TMJD (Temporomandibular Joint Disorder) often associated with migraines? I have had chronic classical migraines since Feb. 2004 due to my jaw dislocation. Patients suffering from temporomandibular joint (TMJ) disorders exhibit significantly more jaw dysfunction and pericranial muscle tenderness compared to migraine patients. Jaw pain that occurs with chewing often is considered to be TMJ dysfunction, particularly if subluxation (abnormality of the normal position of a joint) of the jaw can be shown on the physical examination. The cause of migraines is unknown; there may be some genetic influence. Regional alterations in blood flow in the brain due to dilation of the arteries in the brain accompany a migraine attack. Migraines can be on one side of the head, or they can be generalized. They may be preceded by visual changes, numbness or tingling, restlessness, or depression . The patient may have attacks daily, or every several months. I...
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