SOLVED; THANKS, Y'ALL!!! Guy who gets "walking spells", can't stop himself, just starts walking?

Hello! Read this a year ago, not sure of publication date, though it is a "modern" fiction novel; has cell phones, etc. It's about a guy who's married, with a daughter (I believe, maybe 2 kids?), and every now and then he'll get possessed by the need to walk. It can happen at any time, and when it does, he's out of control, just starts walking, regardless of weather or what he's wearing. Eventually he'll basically pass out and wake up somewhere unknown to him. Have searched all sorts of things, to no avail. Any help would be GREATLY appreciated; the book was very readable, well-written, but means a lot to me at a personal level, so would love to reacquire. Thanks!
Matt
Edgar Huntly, Or, Memoirs of a Sleepwalker sounds pretty similar, though it's from 1799.
Thanks, but yeah, not it. I should have added in my post that it IS a "newer" book; though I'm not sure of year, definitely more recent than not (cell phones, etc.)
Thanks!
"The Unnamed" by Joshua Ferris?
Haven't read it but it sounds like the book you're looking for.
I haven't read it, but perhaps "The Unnamed" by Joshua Ferris?

"Tim Farnsworth is a handsome, healthy man, aging with the grace of a matinee idol. His wife Jane still loves him, and for all its quiet trials, their marriage is still stronger than most. Despite long hours at the office, he remains passionate about his work, and his partnership at a prestigious Manhattan law firm means that the work he does is important. And, even as his daughter Becka retreats behind her guitar, her dreadlocks and her puppy fat, he offers her every one of a father's honest lies about her being the most beautiful girl in the world.

He loves his wife, his family, his work, his home. He loves his kitchen. And then one day he stands up and walks out. And keeps walking."