if they are little red blisters that open up, they might be histiocytomas. I agree that a trip to the vet is definitely in order. Ring worm is perfectly round and can be diagnosed with a black light. Cindy
Looks like allergic reaction to something,Annie developed re raised lumps that looked like boils but the vet said they were allergy related,also the fur looks greasy so could be food related,good luck at the vets,karen