Spontaneous sweating may be observed in:

Question

BlackTom AI · Accepted Answer

Wei (protective) Qi holds the pores closed; when Qi is insufficient the pores open and spontaneous (daytime) sweating occurs. Yang deficiency likewise weakens the body's warming and defensive functions so that sweating can occur without exertion. These two TCM mechanisms directly explain daytime spontaneous sweating.

1) Relevant knowledge points and concepts
- Wei (protective) Qi controls the skin pores; Qi deficiency → inability to hold the pores → spontaneous (daytime) sweating.  
- Yang deficiency reduces the body's warming/protective activity; mild-moderate yang deficiency may present with spontaneous sweating (often with cold intolerance, tiredness).  
- Yin deficiency typically causes night sweats (empty-heat) rather than daytime spontaneous sweating.  
- Collapse/depletion of yang (yang collapse) produces profuse cold sweating in a severe, life-threatening state — a different pattern than ordinary spontaneous sweating due to chronic deficiency.  
- Blood/fluid deficiency does not characteristically cause daytime spontaneous sweating.

2) Step-by-step reasoning
- Option D (Qi and yang deficiency): Both Qi deficiency (esp. Lung/Wei Qi) and yang deficiency directly impair the protective/holding function at the skin, producing spontaneous sweating. This matches the clinical pattern for daytime spontaneous sweating.  
- Option B (Blood and Yin deficiency): Yin deficiency → night sweats; blood deficiency → signs of poor nourishment (pallor, dizziness) rather than typical spontaneous daytime sweating. So B is not the classic cause of spontaneous sweating.  
- Option C (Collapse/depletion of yang): Yang collapse causes profuse cold sweat, but this is an extreme collapse pattern (sweating with cold limbs, weak breath) rather than the ordinary spontaneous sweating seen in deficiency — thus C is not the best single choice.  
- Option A (Blood and Fluid deficiency): These do not typically cause spontaneous daytime sweating.

3) Why the correct answer is correct
Qi deficiency and yang deficiency both impair the defensive/holding function of Wei Qi at the skin; therefore spontaneous (daytime) sweating is a classic sign in these deficiencies. Yang collapse is a separate, acute pattern with profuse cold sweat.

Conclusion: The correct answer is D. Qi and yang deficiency — this matches the authoritative answer provided.

Spontaneous sweating may be observed in:单项选择题

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