What symptom is commonly associated with Yang deficiency?

Yang deficiency in Traditional Chinese Medicine (TCM) is characterized by a lack of warming and energizing qualities within the body. This deficiency often manifests in symptoms that reflect an inability to maintain warmth. Chills and aversion to cold are hallmark signs of Yang deficiency, as the body's overall energy becomes insufficient to combat external cold or even maintain a warm internal environment.

In TCM, Yang energy is associated with warmth, activity, and metabolism. When Yang is deficient, individuals often feel cold, both in terms of their bodily sensations and their overall vitality. This may lead to increased sensitivity to cold environments and a desire to seek warmth, as the body struggles to generate sufficient heat.

While other symptoms mentioned can be related to different imbalances (such as hot flashes being linked to Yin deficiency or insomnia possibly indicating disharmony of the heart and spleen), chills and aversion to cold specifically align with the symptoms associated with Yang deficiency, making them the most relevant choice in this context.