What does "Yin deficiency with Yang hyperactivity" mean?

Generally speaking, "Yin deficiency with Yang hyperactivity" is a term in traditional Chinese medicine (TCM) that refers to an imbalanced state in which the body's Yin fluids are deficient while Yang Qi becomes relatively excessive. This condition is often associated with constitution, lifestyle habits, and daily routines. A detailed explanation is as follows:

In TCM theory, Yin fluids moisten and nourish the body, while Yang Qi provides warmth and drives physiological functions. When Yin fluids become depleted due to overwork, prolonged illness, staying up late, or other reasons, Yang Qi loses its restraining force and becomes relatively excessive, leading to a state of Yin deficiency with Yang hyperactivity. Common symptoms include dizziness, tinnitus, dry mouth and throat, irritability, insomnia, heat in the palms and soles, flushed face, and red eyes. Some individuals may also experience soreness in the lower back and knees or night sweats.

This condition is often linked to unhealthy lifestyle habits. For example, chronic sleep deprivation can damage Yin fluids, consuming excessive spicy or hot-natured foods may exacerbate Yang excess, and long-term mental stress can also disrupt the balance between Yin and Yang. Regulation should follow the principle of nourishing Yin and subduing Yang, avoiding further depletion of Yin fluids.

In daily life, dietary adjustments can be helpful—consumption of Yin-nourishing foods such as tremella fungus, lily bulbs, and goji berries is recommended, while spicy and warming foods should be reduced. Maintaining regular作息 (daily routines), avoiding late nights, keeping emotions calm and balanced, and engaging in gentle exercises such as walking or tai chi can aid in restoring the body's Yin-Yang balance.