Patients with which condition typically have a feeble cough and watery sputum?

A feeble cough and watery sputum are characteristic of Lung Qi Deficiency, known as LU Qi Xu. In Traditional Chinese Medicine (TCM), this condition arises when the Lung's ability to govern the airflow and expel phlegm is impaired. When Lung Qi is deficient, the lungs are unable to produce a strong enough cough reflex to clear mucus effectively, resulting in a weaker, less forceful cough. Additionally, the sputum becomes more watery due to the lack of proper transformation and transportation functions of the lungs, which are compromised when Qi is insufficient.

This clinical picture of LU Qi Xu can often be accompanied by other symptoms such as shortness of breath, fatigue, and a tendency to catch colds easily, all indicating diminished lung capacity and function. This helps to differentiate it from other conditions that may involve cough and sputum but present with different characteristics or qualities.