What did the vet say it was?  Just a wild guess since I haven't seen it and
I'm not a vet, but I would consider ringworm.

Hugs,

CatNipped

Benedryl is a antihistamine. If that is what your vet told you to do,
then check by making a quick call to them asking them to confirm that
this is in actual fact what they wanted you to do, & whilst your
there, it might by an idea to ask them why they suggested that too.
Good Luck,
Sheelagh >"o"<

could be fleas? but yeah try for ringworm

I got my cat Coco when he was about 6 months old & over the next year, he got
similar small red spots in front of his ears above his eyes 3 or 4 times,
which each time developed into larger lesions that looked kind of ugly. The
vet said it was some type of eczema and/or allergy & I found putting on
ointments was useless as Coco rubbed it off immediately. He was given a
steroid shot a couple times & after the 4th bout, my vet suggested he be
given Derm Caps daily which is a liquid vitamin supplement with omega-3 and
omega-6 fatty acids. He gets 0.5 ml. every day in his food & has been for the
past 4 years, & hasn't had a recurrence since.  

Derm Caps liquid drops are not expensive, is easy to add to canned food, is
well tolerated by my cat & is worth a try.
M.