Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. Based on the pictures, it appears that Ghost may have an allergic skin reaction or skin infection starting. I would recommend a topical approach and see if this helps. If there is no improvement, then I would recommend taking him to the veterinarian so that the most appropriate diagnostic and treatment recommendations can be made.
1. Douxo PS Calm shampoo 2. Hydrocortisone spray by Well and Good at Petco and apply twice daily to the area 3. Miconahex + Triz spray and apply twice daily to the area