From Ashley:

Update: so what they are thinking is going on is a syndrome called Guillain-Barré syndrome its A condition in which the immune system attacks the nerves.The condition may be triggered by an acute bacterial or viral infection. They are not 100% sure because his protein levels are not super elevated and that can take days before they do, they want to get ahead and get treatment started. They are also doing an echo of his heart since he has some irregular heart rhythm and some other things they seen on the EKG .