My lab currently is red and raw at her armpits and groin, also sticky/slimy. The vet is sure it's yeast but I would not pay for a skin scraping to confirm it since there is a history, and we have been on a vicious cycle of antibiotics and temaril-P, and probiotics. It's possible it's also an allergic reaction to flea saliva. Natural Care Hot Spot Spray gives her some relief, The vet put her on Hill's zd thinking she had a food allergy, but she lost 8 lbs in six weeks like the food has no nutritional value. I put her on a high-quality grain free food and supplementing with daily spoonfuls of plain yogurt hoping that will help with the yeast. The other preventative is giving her the flea medicine every 3 weeks.
My Pug Has Red, Itchy Armpits That She Had Dug Raw. Has Anyone Used Anything That Was Particularly (cheap!) Helpful?
I would try some cortisone cream to see if that alleviates the itchy skin. There are also products in the pet store that you can spray on hot spots that should help. If it doesn't work take her to the vet, obviously.