Which symptoms are indicative of Wind-Heat invasion in TCM?

Wind-Heat invasion in Traditional Chinese Medicine (TCM) is characterized by a set of symptoms that reflect the body's reaction to an invasion of external pathogenic factors associated with heat and wind. The correct choice of dry cough and sore throat aligns well with this diagnosis, as these symptoms indicate an invasion affecting the upper respiratory tract and indicate heat in the lungs.

In the case of Wind-Heat, the presence of a dry cough suggests irritation of the throat and respiratory system, often exacerbated by the heat, which causes a lack of moisture. Similarly, a sore throat is a classic symptom that highlights how the wind-heat pathogen affects the throat and airway, causing inflammation and discomfort.

The other choices reflect symptoms that align with different patterns in TCM. For example, heavy limbs and fatigue may be indicative of a damp condition or Qi deficiency rather than the clear heat associated with Wind-Heat. Nausea and copious sputum suggest a different pathological condition, more in line with phlegm or dampness obstructing the lungs, which is not characteristic of Wind-Heat. Lastly, cold extremities and weakness typically denote a pattern of deficiency, often relating to a Yang deficiency or invasion of cold rather than the heat present in a Wind-Heat pathology