phrenitis Meaning, Definition & Usage

  1. noun inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use)
    encephalitis; cephalitis.

WordNet

Phre*ni"tis noun
Etymology
L., fr. Gr. , fr. , .
Definitions
  1. (Med.) Inflammation of the brain, or of the meninges of the brain, attended with acute fever and delirium; -- called also cephalitis.
  2. See Frenzy.

Webster 1913