I learned a long time ago not to poke fun at others ailments. if someone tells me they hurt, I believe them. The diseases mentioned are named by physicians who understand very little about them.
I have a friend with chemical sensitivity who swells up and can't breathe around certain chemicals. At first, she just said she felt sick and no one believed her. They thought it was her way out of what she didn't want to do.
Now they can't deny the swelling and loss of breath. When it comes to illness, we all tend to go by sight. Doctors do the same thing. the problem is that a person can look just fine and feel horrible.
People generally want to be well.