Thanks for asking about Allie.
My name is Rebecca. I am a veterinarian, and will do my best to help.
If the skin where she has lost hair is infected, the Fuciderm may help. If the skin is inflamed (red, itchy, swollen), the cortisone cream may help.
If the skin is normal: dry, not red, smooth, just hairless, then probably neither one will help.
Hypothyroidism can make a dog lose hair, starting on the tail. Other hormonal conditions like Cushing's disease ( over active adrenal glands) will also cause hair loss and the tail can be the first place you notice it.
There is a supplement called melatonin that can sometime help to get the hair follicles working again. It is available over the counter.
I am not seeing responses from you. I hope you see what I am writing!
I will try to connect another way if I do not hear from you first.
Thanks for the advice Rebecca. The skin is dry and not red so I'll try the melatonin. I'll also look upo hypothyroidism!