Asthma is a chronic disorder of the lungs and airways, characterised by wheezing, coughing, shortness of breath, and tightness in the chest. These symptoms are caused by increased sensitivity of the airway to stimuli or ‘triggers’. Common triggers include allergens (dust, pollen), chest infections, emotional factors (stress, heavy laughter), smoke (cigarette or fire), and perhaps most relevant to this time of year, cold/dry air and exercise. The severity of the condition can range from mild, occasional symptoms, to constant and severe. In most cases, the symptoms resolve quickly, either on their own or with the use of inhaled medication.…