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Asthma is a chronic
inflammatory disease of airways of the lungs.
Asthma is often linked to heredity and environment.
Asthma is considered as a major public health
problem in many countries. Asthma is one of the most
common chronic disease affecting both adults and
According to World Health Organization an
estimated 300 million people worldwide suffer from
asthma, with 250,000 annual deaths attributed to the
Asthma attack is characterized by
sudden attacks of labored breathing, chest
constriction and coughing.
is considered to be a condition characterized by
narrowing of airways where in the patients would
gasp for breath.
Despite the availability increasing
treatment, asthma-related morbidity and mortality
continues to rise.
The prevalence of asthma is
increasing in developed as well developing countries
through the world. The current prevalence is estimated
to be 5 to more than 10%.
In a normal individual,
various airborne allergens (triggers) stimulate the
production of antibodies and other chemicals in
controlled quantity, which destroy the allergen but
donít harm the body.
But in allergic individual who
have asthma there is over production of antibodies
and other chemicals which cause inflammation of the
airways, which is hallmark of asthma attack.