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A = Asthma B = Sinusitis C =Hay Fever In which kind of allergies ... Asthma Asthma is a disease of the respirator
A = Asthma B = Sinusitis C =Hay Fever In which kind of allergies ... Asthma Asthma is a disease of the respirator
admin
2012-01-21
19
问题
A = Asthma B = Sinusitis C =Hay Fever
In which kind of allergies ...
Asthma
Asthma is a disease of the respiratory system. Your respiratory system is made up of your nose and mouth, your windpipe that connect your nose and mouth with your lungs and people who have asthma sometimes have trouble breathing. When people who have asthma have this trouble breathing, we call it an asthma attack.
During an asthma attack, it is actually harder to breathe out than it is to breathe in. This means that during an asthma attack, it takes much longer to breathe out (expire) than it does to breathe in (inspire).
Lots of different things can cause an asthma attack. Something that causes an asthma attack is called a trigger. Some common triggers of asthma attacks are: allergies, infections like colds or bronchitis, exercise, changes in the weather (from mild to cold) and smoke.
Everybody doesn’t feel the same things when they have an asthma attack. Sometimes, some people will cough and cough and cough, some feel like they can’t catch their breath, some people feel like air is trapped in their lungs and they can’t get it out, some people have pain in their chest, and some people have very noisy breathing.
Sinuses
Sinuses are hollow air spaces in the human body. When people say, "I’m having a sinus attack," they usually are referring to symptoms in one or more of four pairs of cavities, or sinuses, known as paranasal sinuses.
Anything that causes swelling in your sinuses or keeps the cilia from moving mucus can cause sinusitis. This can occur because of changes in temperature or air pressure. Using decongestant nasal sprays too much, smoking, and swimming or diving can also increase your risk of getting sinusitis. Some people have growths called polyps that block their sinus passages.
When sinusitis is caused by a bacterial or viral infection, it’s often called "acute sinusitis". Acute sinusitis sometimes occurs after you’ve had a cold. The cold virus attacks the lining of your sinuses, causing them to swell and become narrow. Your body responds to the virus by producing more mucus, but it gets blocked in your swollen sinuses. This built-up mucus makes a good place for bacteria to grow. The bacteria can cause a sinus infection.
Symptoms of sinusitis can include headache, toothache, swelling of the eyelids and tissues arotmd your eyes, and pain between your eyes, tenderness when the sides of your nose are touched, a loss of smell, a stuffy nose, earaches, neck pain, and deep aching at the top of your head.
Hay Fever
The most common of all allergies is, of course, hay fever. Symptoms of allergic rhinitis (Hay Fever) include itchy, runny, sneezy, or stuffy noses, and itchy eyes. Allergic rhinitis is a common illness affecting an estimated 20-40 million Americans, and resulting in 10 million lost days of school or work each year. Often caused by pollens from trees, grass or weeds, it is most commonly known as hay fever. Hay fever subsides with the onset of cold weather. Perennial allergic rhinitis, however, occurs year around and is caused by indoor allergens such as dust, mite, mold spores, and animal dander. Chemical substances, such as histamine, are normally stored in mast cells in tissues of the body, including the nose and eyes. The allergic person forms antibodies against pollens and other allergens. These antibodies attach themselves to the mast cells, and when combined with the allergen the result is the release of histamine and other chemical substances from the mast cells. These chemical substances cause the allergic responses of itching, sneezing, congestion, and dripping.
选项
A、
B、
C、
答案
C
解析
“Hay Fever”有这样的叙述“Perennial allergic rhinitis,however,Occurs year around and is caused by indoor allergens such as dust,mite,mold spores,and animal dander.”对于患有 严重过敏症的人来说,一年中没有安全的时候,因此答案为C。
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