By Renée Grinnell

A state of unpleasant arousal in situations of real threat (as opposed to anxiety, which generally occurs without the presence of any external stimulus).

Example: A soldier is pinned down by heavy fire; his ammunition is expended and all his friends are dead or wounded. He trembles with dread.

    Last reviewed: By John M. Grohol, Psy.D. on 16 Oct 2008