Hey there! I recently got my first sphynx cat so I’m pretty new to all of this. He is 4 months old and recently has been getting small red bumps down his back. It almost looks like small pimples. We thought maybe it was an allergic reaction and we switched his shampoo, his food, his laundry detergent but nothing has really helped. We bathe him once a week with a sensitive skin non fragrance shampoo that was recommended on another sphynx site. The detergent we use to clean his bed and his shirts is also Fragrance free and for sensitive skin. We only put a shirt on him when he goes to the basement living area since it’s cooler down there so he isn’t in it for long periods of time. I’ve attached a photo of his back. The lighter spots are where he has had the red spots before. I think it’s caused some of his peach fuzz to fall out making the area lighter. All advice is welcome. We are new to this and want to take the best care of him that we can. Thank you in advance!