brainsick

And this man, at once unprincipled and brainsick, had in his keeping the understanding and the conscience of the unhappy Monmouth.

Posterity can do simply nothing for a man; nor even seem to do much if the man be not brainsick.

I hope so, for I would fain think some sunny thought of the poor brainsick folk.

To be brainsick and heartsick in a cruel and unfamiliar world is to be morbid.