vex

cause annoyance in; disturb, especially by minor irritations

Mosquitoes buzzing in my ear really bothers me

disturb the peace of mind of; afflict with mental agitation or distress

I cannot sleep, my daughter's health is worrying me

change the arrangement or position of

subject to prolonged examination, discussion, or deliberation

vex the subject of the death penalty

be a mystery or bewildering to

This beats me!