0.5–1 cun slightly obliquely in an inferior direction. Bend the patient’s head slightly forward when needling.
Caution: Dangerous point with deep needling! No stimulation. Strictly no needling in a superior direction, danger of puncturing the cerebellomedullary cistern (also site for suboccipital puncture).
The needle should be inserted into the nuchal ligament. According to some authors, moxibustion is contraindicated.
Fengfu DU-16 is a Sea of Marrow point, which stimulates the Marrow to go up to fill the Brain. This is another reason this point is able to treat headache. Other typical symptoms are dizziness, tinnitus and blurred vision.
Finally, it calms the Mind and open the Mind's orifices so as to treat manic behavior, suicidal thoughts, sadness or sense of fear.