Has anyone had a puppy with mange?

My special girl Deanie has this, it is not contagious to other people or dogs, all people have demodex mites in their eyelashes on their skin, and so do all dogs. When a dog has gets mange it is because their immune system is compromised, by dog was treated with increasing dosages of ivermectin over a period of a month, she get sick rather easily, and hopefully when we get her spayed next month it will be less. She is almost 2. She has had a staph infection, if she gets a sore it seems to take a long time to heal, we have to bathe her with a special shampoo. Once in a while she gets hair loss in pat