JEEZ SRS. I am sorry about your son. It is bad enough when a child is ill but when you can't pin down the cause it gets a bit frightening, nevermind frustrating.
Keep us posted.
Meantime, as Jacqui can attest, my sinuses continue to drain incessantly. It is disgusting. So rather than risk a colonic irrigation in the Ward, I think I'll hide here for a while.