Yes, I agree. Because of a change in my work hours, I had to take my
cat to the vet office at a time when my regular vet wasn't there.

I spend a good deal of time around my cats, and have never seen him
over-grooming. Like I say, the bald area doesn't seem to bother him at
all, and he's exhibiting no other symptoms.

This sounds like it's worth a try. I give my cats dry food in the
morning because I figure it provides them with good excercise for their
gums and teeth. For their other meals, they get canned food. I am going
to get them a dry food without corn and see if it makes a difference.

Thank you for the helpful response,

It's interesting you bring this up. The reason I had him to the vet was
for a painless sore on his shoulder that turned out to be ringworm. I
was given a cream to apply to the sore and it cleared it right up in a
week or two. Since then he has had no recurrence of ringworm.
When I brought up the leg baldness with my vet at that time, it wasn't
as extensive as it is now. The vet told me he's seen similar baldness
on many otherwise healthy cats, and acted as if it were nothing to be
concerned about. But, like I say, the baldness has gotten worse since
then. It doesn't seem to bother him, but it sure bothers *me*.
Right now, I think I'll take a "shotgun" approach and both eliminate
corn from his diet, and try applying the anti-fungal cream to a small
patch of the bald area. If the entire bald area improves, I'll then
know it was a corn allergy. If just the patch I'm treating with the
anti-fungal cream improves, then I'll know it's a fungus infection, and
will then start applying the cream to the whole area.

Thank you for your help. I really appreciate it.