Asthma is fully referred to as bronchial asthma. It is primarily due to the presence of inflammatory cells in the airways over a long period of time. These inflammatory cells render the trachea highly reactive. With this hyperreactivity, patients often experience wheezing, shortness of breath, chest tightness, and coughing, which typically occur in the early morning and at night. These symptoms can generally be alleviated with or without medication, and if a patient typically exhibits these symptoms, an asthma diagnosis can essentially be made. However, if the symptoms are atypical, such as having only coughing or wheezing, it may be necessary to perform some pulmonary function tests, chest X-rays, ultrasounds, or electrocardiograms on the patient to rule out other diseases that could cause wheezing and coughing. Therefore, doctors will arrange for these tests based on the patient's symptoms.