not trouble head about
not trouble (one's) head about (someone or something)
To not concern oneself with or worry about someone or something. It's just a minor technical error that should resolve itself—I wouldn't trouble your head about it. I know I shouldn't trouble my head about such negative people, but I can't help letting their comments get to me.
not trouble one's (pretty) (little) head about something
Rur. not to worry about something. (Considered demeaning by many.) Don't you trouble your little head about that. I'll take care of it. You shouldn't trouble your head about it. Everything will turn out fine.