If he hasn't, he must have an MRI to rule out Chiari Malformation. This is the herniation of the cerebellar tonsils in the back of the brain, and symptoms can often mimic MS. He should also be checked for tethered cord and syrinx.

Check out these sites for all the info you could possibly want:

www.ASAP.org
www.Chiarione.org
www.conquerchiari.org
www.WACMA.com

The sites can also help you find a neurosurgeon experienced in Chiari, should he need one.

Good luck...

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