TH1 is the top-most thoracic vertebra of the upper back, below the seventh cervical vertebra (C7). TH1 nerves affect the chest, shoulders, arms, and hands.
• Connections: shoulder, arms from the elbows down (including hands, wrists, and fingers), esophagus and traches, neck, lower arms, fingers, parathyroid, carotid, lungs, heart, pulmonary
• Possible problems: shoulder pains, cough, neck cramps, asthma, difficulty breathing/shortness of breath, ligament inflammation, pain in lower arms and hands, furry feeling in fingers
