Troubling
verb
To disturb, stir up, agitate (a medium, especially water).
To mentally distress; to cause (someone) to be anxious or perplexed.
“What she said about narcissism is troubling me.”
In weaker sense: to bother or inconvenience.
“I will not trouble you to deliver the letter.”
noun
The infliction of trouble or distress.
adjective
Distressing, worrying