Born in Michigan, Trevis now lives in County Kerry, Ireland, with his wife Caryn.
He's written an award-winning memoir 'Chef Interrupted' and has just published a compilation cookery book. He blogs for a number of sites about life with MS. Read more from Trevis on his website
While frosted window panes, ice-tipped trees and snowy laneways may be the stuff of a 19th century Currier and Ives painting of winter, they can make living with MS very difficult indeed.