In terms of location, the large intestine meridian of Hand Yang Ming has to pass through the thyroid gland, and "the meridians pass through the main treatment".
The large intestine meridian of the hand yang ming has a unique effect on phlegm and qi, and traditional Chinese medicine believes that the gall tumor is formed by the accumulation of phlegm, so stimulating the arm and cheek points on the hand yang ming meridian can eliminate the gall.
From the perspective of human anatomy, when the thyroid gland is damaged, the platysma muscle becomes tense and tense, causing the entire muscle fascia to tense contractures, so thyroid lesions can cause inflammation or tendon knots in the brachial acupoints.
When the brachial acupoint is stimulated, it can also relax the platysma muscle, which can also eliminate the swelling or pain of the thyroid gland and promote its functional recovery.