Heart Channel

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Which of the following points clears heat and transforms phlegm to calm shen, but is more commonly used to treat disorders of the arm, such as numbness and trembling of the arm and hand, and disorders of the elbow.
HT-3 is on the elbow, so it's good for the elbow. It can be used for atrophy disorder, hemiplegia after stroke, or bi syndrome, often combined with points like LI-11.

Source: "The Heart Channel of Hand Shao Yin." A Manual of Acupuncture, by Peter Deadman et al., Journal of Chinese Medicine Publications, 2007, p. 214. [Q39]