Unstrung

He had been quite furious upon discovering that the "little episode" of the moonlit cottage had filched from him all his new won strength and nervous stamina, leaving him sleepless and unstrung, ready to jump at the rattling of a stone.

Waking up in the small room, you feel dull, stupid, gloomy, oppressed, yawny, lax, and all unstrung in body and mind...

“Why, Jane,” he cried, “what do you mean? What has our providential rescue to do with altering your feelings toward me? You are but unstrung—tomorrow you will be yourself again.”