ASTHMA CAUSES AND ALLERGY

Asthma - Causative Factors:- In spite of worldwide research, the exact cause of Asthma is not known to modern medicine. It is considered to be caused by certain substances which taken together are called allergens. These allergens range at times from fine dust particals, pollen, to tiny fragements of fur which float in the air and which fall off moulting animals and birds. Asthma patients are often very sensitive to irritating fumes such as cigarette smoke or the smell of lime which is often used for white-washing walls. Some patients a re also allergice to medicines such as penicillin, aspirin and some preservatives used in tinned food and drinks. 

What is Allergy ?:- Allergy is a kind of reaction of the body to external substances which may or may not be otherwise harmful. A healthy body is guarded against the invasion of germs by some special cells which are collectively called the immune system. As a reaction to any foreign body, an antibody is produced inside the individual which envelopes and destroys the former. Sometimes this immune system over reacts to some apparently harmless substances such as pollen, pieces of hair, dust particals and even perfume. The allergy is considered to be a cause of bronchial Asthma and bronchitis in modern medicine.