OK, in that case I totally misunderstood. Apologies, and thanks for your concern.

It is indeed hard to know what to make of a lot of the suggestions I receive here, but the quality level of the comments is way above the kind of discussion you would get in most places by posting such a story ("have you tried crystals or magnets?") Already it has turned up something (Celiac) that apparently has been entirely overlooked by all of the doctors I have seen thus far. Even if that turns out to be a dead end, it's worth knowing about and investigating.