Hi fourleggedfrnd, and
to
The Squirrel Board , chipmunks are just as cute as Squirrel's.
Actually they are such a close cousin they have their own category in the forum section, do you have a whole lot of photos you could post.
There's been a lot of discussion lately on itching and possible causes, dry skin could be a culprit this time of year, especially if you don't see anything obvious.
Post a few pics when you get a chance and we'll see how much more input could be offered in the meantime, glad someone recommended you to just the right place.