I have 2 shelties, in the last year they have come down with some type of skin problem. They scratch a lot. I have also battled with fleas. I have treated my yard and home and dogs. ( I buy the flea medication that the vet sells) I have taken them to the vet and he assures me they have some type of allergy, we have ruled out that it is not a food allergy. He gives them steroid shot and they get better for a little bit then back to inflammed skin and sores. One loses hair, has some balding areas. I wonder if I should get a second opinion? They do not appear ill, they play and eat. The scratching drives me crazy. They are able to sleep. I have given them flea baths also. Any suggestions would be very helpful. Thank you