çıldırmak [col.]

listen to the pronunciation of çıldırmak [col.]
Турецкий язык - Английский Язык
round the bend
crazy, mad or insane
(deyim) To be/go round the bend is to be/become mentally confused or unable to act in a reasonable way

If I'd stayed there any longer I'd have gone round the bend.

balmy: informal or slang terms for mentally irregular; "it used to drive my husband balmy"