My cat is a bit overweight and has some dandruff along her back. She used to have a sweet spot that when I would touch there she would begin to lick the air excessively. We took her to the vet to get shots and her teeth clean and when she got back you could not touch her from her mid back to her tail otherwise she will lick the air or her back. I am concerned about what is wrong with her, I am thinking I need to take her to the vet but it is really hard to get her to go. It does seem to bother her but she’s not aggressive, it just seems to irritate her. Anyone know what could be causing this?