are the scabs greasy and crusty? that can be sebaceous gland excretion
are there red bumps under the scabs if so that is more like a staph infection.
has your dog had skin issues in the past or is this something new that popped up and how long have the bumps been there?
I personally like dermatologists for skin issues you end up saving money in the long run as they get to the problem faster many times but I would do the blood work with vet |