My dachshund has a strange skin rash. help?

she is a red female mini dachshund who is 9 months old. on her stomach is a large red rash with tiny black dots in it. it smells weird and it seems to itch her. i will get her to the vet as soon as i can, but i was wondering if anyone knew what it is and what i can do to make it feel better or heal in the meantime. thanks!|||If it smells then it is probably mange. You must get this treated as only a vet can cure it. You should also keep your dog away from other animals as it is highly contagious. Some forms of mange are also contagious to humans too, so get that treatment as soon as possible, and keep her quarantined.