There are different types of mange -- here is a good link that explains the types:
http://www.petwave.com/Dogs/Dog-Hea ... nter/Skin-Disorders/Mange/Types.aspx
Sorry to say, but I think your dog needs to see a vet to determine what type he/she has and the best way to treat it. One of these types is contagious to humans so you probably don't want to wait too long before seeking help. Good luck!!
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