This type of mite is commonly seen in animals that have been in shelters or in groups with other animals. Sarcoptic Mites are very contagious within dog populations. Some of the symptoms of sarcoptic mange are severe itching, scabs and hair loss. A simple skin scrape is needed for diagnosis. Treating the secondary skin infection is just as important and treating the mites. Sarcoptic mites can bite people as well, but humans are not a natural host for the mite so after treating the pet, human bites typically resolve on their own.