How can I fix this rash 3 years post-op? It hasn't gone away from breast since the start (Photo)

I've had a breast aug/lift 3 years ago and with a second upsize 6 months after my first surgery. I have had a rash that does not go away on my breast since the start. I've tried hydrocortisone and my doctor prescribed me an anti fungal. It cleared it the first time and now it just won't go away. It's itchy and ugly and I don't know what else to do about it. Please help, thank you.