I have a red pimple on my body, which first grows on my chest and then slowly spreads to my chest and back. It is particularly itchy, unlike allergies. The red pimple is not big, but small. Please give it to me. this looks like keloid. You'd better go to the hospital to make a definite diagnosis. If so, you'd better go to a plastic surgery hospital! Or it will get bigger and bigger in the future, protruding like a crab stick. It will also be itchy and red. I have it on my chest. I used to be very small and didn't pay attention. It's getting bigger and bigger now, and it's hard to treat!