shell-shocked

adjective2

1. •
   (figurative) Confused as a result of a traumatic experience.

   • With inflationary pressures easing and economic concerns mounting, shell-shocked investors are seeking the protection of government securities. — 2008
2. •
   (old-fashioned) Stunned or mentally unbalanced by prolonged stress such as experienced in combat or under fire (shell-fire); suffering from post-traumatic stress disorder.

   • Glenn Kilbourne had returned from France early that fall, shell-shocked and gassed, and otherwise incapacitated for service in the army—a wreck of his former sterling self. — 1922