Girls, hello! Today I saw red spots on my child's neck for the first t…

Girls, hello! Today I saw red spots on my child's neck for the first time! ? I was applying cream every day before, but now it's impossible to apply anything there? To keep it moist. Now I'm using Bepanthen, Bioline doesn't help, Sudocrem might work? Is there any other cream from Bioline as a powder? What should I do girls?? ?