Hi there. In my opinion, you need to sit down with them and have an open discussion as to what anxiety is in the first place(how it makes you feel) and secondly about how a particular tone/comment/behavior triggers you. It may be the case that they may not understand you immediately and have a lot of questions. Answer them patiently. In case their behavior does not change over time or they dismiss how you feel, I feel it is best to try and distance yourself from being in the same environment as much as you can. Depending on whether you are financially independent, you could also discuss with them the possibility of living separately so that your relationship does not become all the more strained. Hope this helps! Take care! :)