a cure? He is a pomeranian and is about 4 years old. He's had a full coat once since I adopted him from the pound. [when we got him he did not have hair, but over the course of time he grew hair.] He then recieved a hair cut and his hair has not grown back since [this was about a year ago.], does anyone have any ideas for how to cure this illness? No vets can find anything wrong so i decided to ask you guys... HELP ME & MY DOG, PLEASE!

Have the vets done a thyroid panel?
I have a dog with low thyroid, and it can cause coat and skin problems.