One of two Command Points (with PC 6) added to the original four, for fainting, collapse. Main point for restoring consciousness, for shock, revivial from fainting, weakness, helps patient to awaken, use fingernail in an emergency.
Main point for acute low back sprain, helps relieve pain and restore motion, moves stagnation at the opposite end of the channel. After obtaining the Qi, have pateint bend then rotate the waist.
Nosebleed, nasal discharge issues, problems with olfactory sensations (smell).
Manic-depression and other strong shen disturbances, epilepsy (seizures).