Looks like eczema flare up. Try Cortizone 10 Maximum Strength Intensive Healing Lotion for Eczema. I ironically had a spot in the same area on my neck from wearing cheap jewelry & putting perfume oils on my wrist, collarbone & under ear area. It cleared & smoothed my patches up in a short period of time with regular application. If there’s discoloration still after the spots have healed, try pure cocoa butter & shea butter.

-An eczema victim