tachyphrenia

English

Etymology

From tachy- +‎ -phrenia.

Noun

tachyphrenia (uncountable)

1. (medicine) unusually rapid thought; mental hyperactivity
   • 1973, Oliver Sacks, Awakenings:

     The thought stream, the stream of consciousness, speeds up in these patients with L-DOPA, often speeding too far, into a veritable tachyphrenia, with thoughts and associations almost too fast to follow.