What do we know about "mange"

Thanks Susan and Yes "Demodex" is right on the money. Our Maggie had some medical issues when we adopted her, a cyst on her front leg and foxtails in her ears, both of which she had been treated for just before adoption. She is also on "thyroid" mediation which I guess makes sense since this is a immune system disorder. Our Vet prescribed Amoxicillin 100mg and the bathing will be the "Mitaban" dip. I will check into the probiotics and any additional methods to address the root cause and improve the immune system as best we can. Thanks again!