How to deal with this?

So all my life I’ve lived with my grandparents. I am very thankful towards them and it means a lot that they took me and raised me. One thing that has always been hard to deal with especially growing up was dealing with my grandmother who is a severe hypochondriac. To this day I still don’t know how to put up with it because I wanna just snap sometimes and tell her she is over reacting because it gets so severe sometimes. But then I sit back and realize I don’t know. It’s something she has dealt with her entire life. Even when my mom was a kid.