Deafness, hearing loss or hearing impairment is a disease which causes partial or total inability of hearing. This hearing impairment can occur in a single ear or in both ears. If the inability is by birth in children then this also affects their ability of learning spoken languages. In adults, it causes communication problems and results to loneliness. This hearing loss occurs for a time period or sometimes forever. Here in this article we are going to discuss some causes which results in hearing loss:
Presbycusis is a disease which affects the hearing ability of high frequencies with rise in age. The disease can affect men at an early age of 25 and women at 30. The conditions which increases the chances of facing hearing loss in elderly people are high blood pressure, diabetes or such medications which can harm ear. The extent of hearing loss in elderly people varies with various conditions.
Approximately half of half or hearing loss cases occur due to exposure to noise. According to the research of National Institute for Occupational Safety and Health (NIOSH) most of the hearing loss hi caused due to noise exposure and not due to aging or other reasons. This hearing loss can be temporary called ‘temporary threshold’. The hearing loss can be recovered within 24 hours or in severe conditions it takes a week to recover. You can face permanent hearing loss in both conditions, whether you are experiencing constant exposure to loud sounds i.e. 85 dB (A) or a single time exposure to very loud sound i.e. 120 dB (A).
There is an unawareness in the society regarding the damages which can be caused by hearing of loud sounds. The sound sources which harms the hearing sense in normal environment are the car stereos, crowded area, vehicles, high music, gun shots etc. According to a research there are about 12.5% of children aging between 6 to 19 facing a permanent damage to hearing due to noise exposures. According to The World Health Organization, half of the population between 12 to 35 is facing a hearing loss due to the usage of personal audio devices which are very loud.
Deafness can be genetic as well. Approximately 75 to 80% of people facing genetic hearing loss is due to the recessive genes, 20 to 25% are due to dominant genes, 1 to 2 % are caused due to the linkage of X-patterns and 1% are resulted due to mitochondrial inheritance.
While talking about genetic deafness, this deafness is categorized as syndromic and nonsyndromic deafness. Syndromic deafness occurs when there are other health problems in the patient aside from genetic deafness, this occurs in almost 30% of the patients facing genetic deafness. Nonsyndromic deafness occurs when there are no other health issues other than genetic deafness. Nonsyndromic deafness is faced by about 70% of patients.
Above mentioned reasons are some out of many others which can cause a loss to hearing for a short time or can last forever. If your hearing power is strong then be thankful about it and take care of your ears by saving them from exposures to loud noises.