Asthma is a disease in which inflammation of the airways restricts airflow in and out of the lungs. The word asthma comes from the Greek word “panting”. The panting and wheezing sound characteristic of asthma occur because of the restricted flow of air. Normally, when you breath in, an irrirantor are subjected to a stressor such as exercise, your airways relax and open, allowing the lungs to get rid of irritant or take In more air. In a person with asthma,muscle in the airway tighten and the lining of the air passages swells.

The immune system gets involved, but instead of helping, it causes inflammation. Asthma is a disease of both adult and children. In fact, asthma is the most common chronic child illness. About half of all cases of asthma develop before the age of 10. Many children with asthma also have allergies.

Symptoms: asthma is an illness characterized by episodes of breathing difficulty, usually accompanied by wheezing upon exhaling, coughing, difficult breathing, tightness in the chest, cough (dry or with sputum), flared nostril, abnormal breathing pattern, in which exhalation takes more than twice as long as inhalation, use of the muscles between the ribs (called intercostals) to help with the increased work of breathing and coughing up blood (called haemoptysis). An attack can last for a few minutes or several hours.