3 year old female, symptoms are swollen feet with blister like sore's between toes, black wax that cloggs both ears, and pink skin with missing patches of hair and crusty scab looking things. Been going on for about 2 years now.Been to the vet almost every month for the last 2 years and the vet can't figure out what the problem and says she can no longer help us. we can't keep her on meds anymore for the safty of the dog and I just cant afford to keep taking her back anyway. We live in las vegas, she is a house dog but spends alot of time out doors( mostly dirt and rock) a little section of turf for her to play.No plants in my yard. have 2 other dogs, a jack russell and a collie. Thats all the info i can think of. Has anyone gone through this? Can anyone please help. Any info would be greatly appreciated. THANK YOU ALL AND GOD BLESS

PS. she is on exceed lamb and rice mixed with exceed chicked made by kirkland but we tried her on blue, wellness,evo, etc
and we use a oatmeal shampoo