The only one I know of is Celiac Disease. I would think that in the early presentation of the disease it could be thought to be other respiratory problems.
I hope this helps you a bit. Please stay with us and keep posting.
Moderator Anxiety ~ Panic Disorders
*~* Not a mental health professional at all *~*
Dx: Anxiety/Panic, Depression
_____________________________________________________"If you doubt you can accomplish something, then you can’t accomplish it. You have to have confidence in your ability, and then be tough enough to follow through.”