Had the same thing with my Emma, hers started just before 1 year of age. Just thinning. Went to vet, skin allergies, did the antibotics, steriods, med shampoo, nothing helped. Changed from commerical dog food to raw food diet, saved her life. I pass this on to others with same problems, works so well. I will never do dommercial dog food again, no matter what dog. Beautiful coat, high energy, Vet is amazed. Nothing, nothing but good things happened with this. We also went thru all the testing, etc.