To cause one to feel bewildered. Primarily heard in UK, Australia. All of this traveling for work has started to do my head in—I don't even know what day it is!See also: head
do someone's head in
cause someone to feel annoyed, confused, or frustrated. British informal1997Sunday Telegraph Now psychobabble has become part of our vocabulary—and it's doing Theodore Dalrymple's head in. See also: head