Archive for month: October, 2010

Introduction Asthma is an allergic disorder characterized by recurrent episodes of dyspnoea (difficult breathing), cough, and wheeze caused by reversible airways obstruction. Spasm of the bronchial tubes and excessive excretion of a viscous mucous in the lungs is also characteristic. The principal precipitants are cold air, exercise, emotion, allergens such as, house dust mite, pollen, […]