Bronchiectasis generally does not present with symptoms of nausea. Bronchiectasis primarily occurs when the body is infected with particular pathogenic microorganisms, such as Pseudomonas aeruginosa, atypical mycobacteria, or from childhood infections like measles or whooping cough that damage the cartilage of the trachea, causing the tracheal cartilage to fail in maintaining the normal shape of the trachea. Consequently, the trachea can become dilated due to the pulling by the surrounding lung tissue. Once diagnosed with bronchiectasis, the main symptoms displayed are coughing, coughing up phlegm, and some patients may also experience chest tightness and shortness of breath. Generally, it does not cause nausea. However, severe coughing or a significant amount of difficult-to-expel phlegm can lead to concurrent symptoms of nausea, but these are not directly caused by the disease itself, but rather by its complications. Therefore, appropriate treatment can significantly alleviate these symptoms.