What could be causing hair loss?

My dog has lost hair in two little spots near her nose. I know the obvious answers are demodectic mange or ringworm, but both of those seem to cause redness, scaliness, etc. and this is just missing hair. The skin below it looks healthy and clear. We have a vet appointment for tomorrow, but I'm curious if anyone has any thoughts.



You can see the spots in this picture: http://farm4.static.flickr.com/3009/2936/a>What could be causing hair loss?
I 'm sorry I don't know, but your dog is BEAUTIFUL! Good Luck tommorow!

What kind of dog is it? He/she looks like the chow mix I had.What could be causing hair loss?
beautiful dog.



It could be just a place that got scratched, scabbed over and the scabs have come off taking the hair with it.



I do hope its nothing serious.

rosacea treatment