They tend to have not only real ailments, but imagined ailments as well. Stress is a b*tch. Oddly, he holds the key to the stress, but in a way, it's why he is blaming you for all that bothers him. He can't sleep, he's conflicted, and he can't see "why". So it must be....you. See how that works? They will then set about trying to "prove" to the world (themselves?) that this is true. That doesn't stop until they figure themselves out. I still have dealings with ex where she tries to do that. Very hard.
We, in turn, tend to contort ourselves into almost teflon like beings trying to get them to "see" what they are doing. That it's not us. That won't work (see above). Along the way, they wear themselves out and do get sick a lot, have stomach pains, headaches, etc. Depression contributes to that heavily and you'll see similar in depressive people.
It's how they are trying to "figure" things out. How they are trying to cope. Silly when you look at it from the outside. Heartwrenching when you are bearing the brunt of it. Unfathomable when you are living it yourself I would imagine.
Stay healthy, WH. You need to let go of the stress and stay healthy as much as you can. Seriously.
AJ
"Our lives begin to end the day we become silent about things that matter" MLK Put the glass down... "Yesterday I was clever so I wanted to change the world Today I am wise, so I am changing myself."