•Asthma is a chronic inflammatory disease of the airways that causes airway hyperresponsiveness, mucosal edema, and mucus production.

         Asthma is a chronic inflammatory disease of the airways which develops under the allergens influence, associates with bronchial hyperresponsiveness and reversible  obstruction and manifests with attacks of dyspnea, breathlessness, cough, wheezing, chest tightness and sibilant rales more expressed at breathing-out.