Some people's ears produce wax like busy little bees. This can be a problem even though earwax appears to serve an important purpose.
It protects and cleans the ear. It traps dirt and other matter, and it keeps insects out. Doctors think earwax might also help protect against infections. And the waxy oil keeps ears from getting too dry.
So earwax is good. It even has a medical name: cerumen. And there are two kinds. Most people of European or African ancestry have the "wet" kind: thick and sticky. East Asians commonly have "dry" earwax.
But you can have too much of a good thing.
The glands in the ear canal that produce the wax make too much in some people. Earwax is normally expelled; it falls out of the ear or gets washed away. But extra wax can harden and form a blockage that interferes with soundwaves and reduces hearing.
People can also cause a blockage when they try to clean out their ears, but only push the wax deeper inside. Earwax removal is sometimes necessary. But you have to use a safe method or you could do a lot of damage.
Experts at the National Institutes of Health, NIH, suggest some ways to treat excessive earwax yourself. The wax can be softened with mineral oil, glycerin or ear drops. Hydrogen peroxide or carbamide peroxide may also help.
Another way to remove wax is known as irrigation. With the head upright, take hold of the outer part of the ear. Gently pull upward to straighten the ear canal. Use a syringe device to gently direct water against the wall of the ear canal. Then turn the head to the side to let the water out.
The experts at NIH say you may have to repeat this process a few times. Use water that is body temperature. If the water is cooler or warmer, it could make you feel dizzy. Never try irrigation if the eardrum is broken. It could lead to infection and other problems.
After the earwax is gone, gently dry the ear. But if irrigation fails, the best thing to do is to go to a health care provider for professional assistance.
You should never put a cotton swab or other object into the ear canal. But you can use a swab or cloth to clean the outer part of the ear. Experts agree with the old saying that you should never put anything smaller than your elbow in your ear.
如何短期提高三级短文写作能力
公共英语三级学习笔记Unit4Environment
公共英语二级考试听力解题技巧
英语等级二级(PETS2)完形填空高分全攻略
PETS三级作文的应试技巧(2)
公共英语三级学习笔记Unit2People
PETS专家谈PETS二级考试听力高分对策
PETS二级英语知识运用指导
PETS二级考试听力理解题型解析
PETS3级作文指导:图表题(2)
公共英语三级学习笔记Unit1Greetingandintrouduction
公共英语(PETS)写作中常见的逻辑词汇汇总
公共英语五级听力答题思路与方法
PETS三级写作范文精题精选11篇(8)
PETS二级对话理解题的命题思路与解题技巧
PETS三级写作范文精题精选11篇(9)
三级英语应用文写作常用句型
PETS三级写作范文精题精选11篇(7)
公共英语等级考试写作的练习技巧
PETS三级写作的评分标准
PETS专家概述PETS二级考试听力理解
PETS3级作文指导:图表题(1)
PETS专家谈PETS二级考试听力命题思路
公共英语五级(PETS5)听力理解
PETS考试心得:题目不难设问灵活
PETS三级作文的应试技巧(1)
PETS专家谈二级听力命题规律及高分对策
PETS专家谈PETS二级考试听力题规律
PETS三级写作范文精题精选11篇(5)
PETS三级写作范文精题精选11篇(4)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |