Hey mama! I'd love to help, but I'm not sure what you're referring to kasi walang photo or description ng ano exactly ang problema ng baby mo, is it a rash, a bump, discoloration, or something else? Para sigurado kami ng advice, better na ipakita mo sa doctor or pediatrician mo talaga, especially since baby is still so young at seven months pa lang. Let me know more details and we can chat about it, pero professional check muna is really the safest bet para sa peace of mind mo!