Shock

Shock was an emotional response to a frightening or surprising experience.

Sometimes shock was fatal. Stuart Mallory died of shock upon encountering the last emperor penguin. (PROSE: The Last Emperor) Helgert Teveler died of shock upon the sudden arrival of a spaceship. (AUDIO: The Seeds of War) Gaskill Tyran died of shock when a mind probe forced him to face all the terrible things he had done to achieve his position. (PROSE: Dark Progeny)

Doris Squire suffered from shock after seeing a Silurian and was taken to Wenley Hospital. (TV: Doctor Who and the Silurians)

To battle the effects of cyanide the Tenth Doctor needed, among other things, a shock, which he got from Donna Noble kissing him. (TV: The Unicorn and the Wasp)

Within the TARDIS, the First Doctor observed that Archibald Hamish Lethbridge-Stewart was in shock and so gave him a brandy. (TV: Twice Upon a Time)