Vehement reversal

A reversal pattern described in Plain Questions (素问 sù wèn, shēng qì tōng tiān lùn) marked by sudden reverse flow, headache, and dizzy collapse.

Biomedical correspondence: cerebrovascular spasm, cerebral hemorrhage, subarachnoid hemorrhage.

See reversal pattern and wind stroke. Compare fulminant reversal.

Etymology

Chin 薄 bó, is explained as meaning 逼 bī, to force.