I want to describe a angry person. He was very angry. His eyes wide opens, he bits his lips, and his fists hold tight.
He was apoplectic with rage.
Apoplectic pertains to apoplexy which means (from TFD)
- A fit of extreme anger; rage: "The proud ... members suffered collective apoplexy, and this year they are out for blood" (David Finch).
It’s anger so powerful as to have similar effects as a neurological attack. Muscle contractions such as clenched fists and teeth seem to fit this definition.