Download now! Asthma, which occurs in adult and children patients, is a chronic inflammatory disorder of the airways characterized by an obstruction of airflow. Asthma is a heterogeneous disorde that is characterized by recurrent airway obstruction, bronchial hyper-responsiveness, and airway inflammation. Asthma is the most common chronic illness in children population. Download now "Pediatric Asthma Severity Score - Asthma Tracker" app. Disclaimer: all calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. Calculations in this "Pediatric Asthma Severity Score - Asthma Tracker" app might be different with your local practice. Consult to expert doctor whenever necessary.