[Amira]

Hello there. I've noticed a bit of hair loss near my yorkie's mouth and eyelid. It is the smallest amount of hair and not noticeable unless you inspect very closely. I was wondering, could this be a type of allergy, mange, or anything else? She has no hair loss on her body. I have heard of a condition that affects yorkies called "leather ear" yet I dont notice anything wrong on her ear area. Leather ear affects the facial area mostly. Maybe this time of year this happens frequently? Is anyone else having this problem or has experienced anything that sounds similar?
I appreciate everyone's help.
-Amira