Asthma is a common respiratory disease. What are the symptoms after the onset of asthma? Typically, asthma patients exhibit characteristic symptoms, including episodic chest tightness, wheezing, and difficulty breathing, often accompanied by a wheezing sound. The breathing difficulty usually manifests as difficulty exhaling. However, some asthma patients show atypical symptoms, possibly presenting only with coughing or chest tightness, known as cough-variant asthma.