If you feed out of a plastic dish this could be a dermatitis from rubbing her muzzle on the plastic while eating. You could try swapping to stainless or ceramic.
Fleas are another good suspect and using Frontline on her might help resolve this.
You can try some neosporin ointment on the sores you can see.
But these spots might also be mange mites, ringworm fungal infection, a skin infection etc. so I'd see the vet with her for an in person diagnosis and the right treatment.
Hope this helps you!
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