Breathlessness and i have a tickling narrowing feeling at the end of each breath and heaviness in centre-slight left. no history of asthma any causes?

Multiple: Shortness of breath may be caused by a number of underlying conditions, including asthma, cardiac disease, embolism, muscle fatigue and pulmonary hypertension. Your physician may order a pulmonary function test with and without a bronchodilator, an EKG and a Chest radiograph after obtaining a detailed medical history and physical examination to help determine the cause.