Bronchiolitis starts out with signs and symptoms similar to those of a common cold but then progresses to coughing and wheezing. However, in babies and toddlers whose bronchioles are smaller and easier to plug, these viruses often cause bronchiolitis when inhaled. The illness affects infants and young children most often because their small airways can become blocked more easily than those of older children or adults.

Asthma is a respiratory disease and is characterized by the constriction of smooth muscles of bronchioles resulting in air hunger and difficulty in breathing. It occurs in 3 to 5 percent of all the people of the world at some time in their age. In 70% of the people with age less than 30, it is caused by hypersensitivity to specific allergy causing substances.

The body produces it naturally, by way of the adrenal glands, and it's the chemical that's involved in the fight or flight response. Suppose you're walking past a scrap metal yard and the gates are open. All of a sudden, from around the corner, comes this pit bull the size of a pony, dragging his broken chain behind him.

Emphysema is a common disease of the lungs wherein the affected person faces problems in breathing. Actually, the person does not face that much of a problem when he or she is trying to breathe in - the problem is in breathing out. In other words, the carbon dioxide accumulation within the body cannot be exhaled out smoothly, and this leads to trouble.

Bronchiectasis is a lung condition in which some of the bronchi and bronchioles have lost their elasticity and have expanded and filled with fluid. With bronchiectasis, these natural cleaning mechanisms have become damaged or destroyed. Although bronchiectasis can develop at any age, it generally begins during childhood. The mucus is then normally wafted away by the beating of tiny hairs called cilia which line the tubes see figure.

Asthma is a common respiratory disease that affects people of all ages, and if not controlled it can be chronic. This chronic disease is very common in US and the number of patients suffering from it is on the rise. Proper medications during the asthmatic attack must be administered at right time as negligence may lead to fatality of the patient.

The symptoms and exhibitions of such bronchitis infection is similar to that of a common cold. Some of these symptoms include tightening of the chest, dry cough, sore throat or eyes watering. Check if the mucus is green or yellow. Those who are in the high risk category should take extra precaution and consult their doctors, when they exhibit such symptoms.

Cigarette smoke: This is yet another dangerous emission. The passive smokers are the hardest hit. Burning fags pose a serious threat to our respiratory system. Tobacco smoke contains over 40 chemicals including the dangerous tar. Most of them are known causes of cancer. Approximately 90 per cent of lung cancer cases among men, and more than 70 per cent among women have been traced to smoking.

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