Could be any number if things for this. Mess, due to her age, I would want to rule out anything physical or systemic. I would suggest getting her to the Vet for an exam and have blood work done. I would also recommend taking in a fresh stool sample. That nose issue should definitely be checked as she "may" be dealing with an autoimmune problem.
ESP in the older dogs, it is a good rule of thumb to take them in fir yearly exams. Blood work can often detect many issues going on like kidney and liver problems.
LOL! I have to stop using this iPad. Meant to say, First, due to her age.....
Haha - awesome! I always have typos on my droid! It's the swype feature. Thanks for your feedback. She is going to the vet tomorrow. I didn't realize she was already considered "old" or "aging." Poor little thing. :-(
Yes, unfortunately they get old too soon. Glad you made a vet appt