apoplectic

adj. pertaining to apoplexy (sudden physical attack, stroke); full of rage; red in the face (from anger)

Apoplexy is an old-fashioned medical term, which can be used to mean 'neurological impairment' or 'hemorrhage'. It can be used non-medically to mean a state of extreme rage. The word derives from the Greek word for 'seizure', apoplexia , in the sense of being struck down.
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Adjective
1. pertaining to or characteristic of apoplexy; "apoplectic seizure"
(pertainym) stroke, apoplexy, cerebrovascular accident, CVA

(n.)
One liable to, or affected with, apoplexy.
  

(a.)
Alt. of Apoplectical
  

adjective
(person) suffering from apoplexy, likely to have a stroke