An allergy is an overstated response or reaction by the body’s defense mechanisms to elements that are normally not hazardous. These particular environmental substances are known as allergens and are also ordinarily seen by the body as harmless and are unresponsive in non-allergic individuals. Allergens including dust mites, dander, pollens, molds and foods induce reactions which are obtained (which usually develop after birth) fast and are generally foreseeable. Allergy, also referred to as the hypersensitivity disorder of the immune system, is the type-I hypersensitivity which is caused by too much activation of particular white blood cells. This results in an increased inflammatory response. The inflammatory reaction interferes with the tissues and body organs like the skin, mucous membranes, lungs and the gastrointestinal tract.

Bronchitis is a serious but common inflammatory condition of the lungs. Inflammation of the lungs causes redness, swelling, mucus production, and pain. There are two types of bronchitis: acute and chronic. In acute bronchitis, inflammation occurs as a result of a cold, sore throat, or viral infection. Symptoms include fever, headache, fatigue, and a dry cough that progressively becomes productive. Prolonged acute bronchitis that continues for several weeks often develops into pneumonia. In chronic bronchitis, inflammation occurs as a result of exposure to tobacco smoke or other irritants. Symptoms include fever, headache, fatigue, severe coughing, and phlem. Prolonged chronic bronchitis with coughing that lasts over many years can lead to permanent damage of lung tissue causing disability or even death.

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