We have the ability to work remote, so there's no need to "call in sick" - you just stay home and do what you can.
I guess when I think about it, most of the people I work with go to the doctor a lot. Our boss at corp is always going to an appointment. All I can say is they must be making some bank because the insurance this company has would make a jew go "Whoa, wait...it's THAT bad?"
Yeah, I don't take off often for about anything. However, I get to work remote. Even if I feel like shit I can still get enough done in a day that its not a big deal and I can do it while drinking tea and watching a movie with my work laptop (other than when I have to be on one of the completely pointless meetings).
I have had to take a day or two off from time to time for a migraine but that is so rare its counted on one hand over the span of years. That is only because I am basically useless if I get one that bad and just want to hide in a dark room until things level out.