0.5–1 cun transversely.
Caution with infants whose fontanelle has not yet closed.
Qiangding DU-21 is mostly used to expel Wind and treat convulsions. Therefore, it is able to treat symptoms such as visual dizziness, epilepsy and chronic spasm.
It is also able to treat pain and swelling of the vertex as well as swelling and redness of the face. Other typical manifestations include edema, aversion to Wind and Cold as well as profuse nose discharge.