She is a 13 year old Labrador and I have I just started to notice this problem. It does not seem to be too bad, but it makes me worry about her. I am dog sitting for a family member so I cannot take her to the vet or anything if it is just something small. I can't lift her to give her a bath but is there something I can try? Thank you for helping.
Any skin issues need to be seen by a vet as a number of things can make a dog pull out their fur/overgroom.
some examples are flea allergy dermatitis, allergies, skin infection etc.
Can never guarantee 100% as to what it is without being able to see the dog in person.