G'day family. today I am going to lecture YOU on my opinion. That means ignore it if YOU like, it is just my opinion.
YOU have ms, this does not give YOU any right not to be polite. YOU have heard 101 different miracle cures, or cousins that were cured by,abc, whatever. This does not give YOU justification not to be polite. It may be hard. It may take effort not to spit in their face, kick them, or swear at them, but be polite. I am guilty of this and am ashamed of myself for not being polite.
Try, try, try your hardest to be polite. This is a journey, on your deathbed look back on your life and say "Yes, I was polite".
Royce