Which of the following is a sign of KD Qi Xu?

In Traditional Chinese Medicine, Kidney Qi deficiency (KD Qi Xu) can manifest in various symptoms, one of which involves changes in urination patterns. Clear, abundant urination is indeed a sign associated with Kidney Qi Xu. When the Kidney Qi is weak, it fails to properly transform and store fluids, leading to excessive urination that is often clear in nature.

In contrast, infrequent urination and a lack of appetite do not directly relate to Kidney Qi deficiency in the way clear, abundant urination does. Infrequent urination may indicate a different issue, such as Kidney Yang deficiency, which presents with dark, scanty urine. Similarly, a diminished appetite could be more indicative of Spleen Qi deficiency rather than a direct sign of Kidney Qi Xu.

The feeling of heat, on the other hand, is typically not associated with Kidney Qi Xu; instead, it may suggest an excess condition or the presence of heat in the body, which contrasts with the deficiency nature of Kidney Qi Xu. Thus, clear, abundant urination is the most accurate representation of a sign of Kidney Qi deficiency.