Hello, there is an entity called
Cough-variant asthma. It’s usually a dry, hacking
cough that may worsen following exercise, talking, laughing or crying. It is not usually associated with wheezing or shortness of breath. But you can have tightness In the chest. Pulmonary function tests may be normal or reveal a mild obstructive pattern. When pulmonary function tests are normal, a positive methacholine challenge helps support the diagnosis of asthma.