@devsmaj Yes, any big step can cause such apprehension. And this certainly is a big step. That said, perhaps you can look at it from the other side of the coin. You have attempted all your other resources, and have the Mayo Clinic as "a last resort". If you do not take advantage of it, you will have lost. If you do take advantage of it, and testing reveals the problem, then you are on your way to a resolution, and that is a win.

Please let us know how everything goes for you and your son; we care.
Ginger