The migraine situation among some of you is interesting. My mother gets a wave of them every year or so... certain smells trigger them. Causes her to vomit and black out. She's been hospitalized more than once. Her mother had them as well.
Now I don't get them NEAR that bad, but I do get severe headaches on a regular basis. Seems to be a stress-correlation. Same goes for a mild heart condition I have. In general, when I'm not "feeling well" I quickly start not feeling well if you follow.
I think there's a lot of truth in that INFJs internalize stress and it makes them physically ill.
"There is no god; there is only us. Savage and fragile."