Hey = haven't seen you in a while... I think this happens with us as well. But trying to document it is outrageous.
One prime example (and I know you are talking medical symptoms here) is that one our our alters is an alcoholic. Yet the body cannot tolerate alcohol well and it is detrimental to the body to have any. Yet, she drinks when she can. And she is fine. But once she switches out - we feel what she does not as the body struggles against the poison.
I know the littles have severe knee and leg aches but the adults do not... yet the adults have arthritis, but there's only 2 of them, so it is not often. Heck of a time expalaining my list of symptoms to the dr. @_@ There is a thing called PatientsLikeMe.com where you can track these things daily - helps me. But leaves the Dr saying "OK... what's the 5 WORST things?" lol and we have no answers for her because it would depend on who she asks
Good seeing you...
Kiya