My Roxi is almost 3 years old and does the EXACT same thing! I have tried everything for her, she rubs her nose and mouth on the carpet throughout the day and night. Her groomer suspected it was a type of fungus problem, and after much researching, I have just started her on coconut oil. This is only her 2nd day on it, but I've only seen her scratch once today. Good Luck, and I'll keep you posted about how things are working out here.
