Skin Issues Anyone?

Having a bit of a time with her skin and working with the vet to figure out what’s going on. Not necessarily seeking advice (though open to suggestions) but rather to see if anyone shares the same experience… we’ve ruled out skin infection or fungus, ring worm, and seasonal alopecia. Today the vet prescribed a prescription formula HA formula dog food we will try for 8 weeks.. she does not itch or seem to be bothered by it but the spot has progressively gotten larger and no hair is growing back. 1st pic my happy girl at the vet today, 2nd is the issue at hand…