my baby is 3 months and 28 days old. She's getting diaper rash and also rashes on her back and front neck area. What is the cause of rashes on back? please help me I'm worried

A. It Seems more like mosquito bite to be very honest with you other than that it’s very difficult to figure it out right now so the best remedy that you can go ahead with it is right now to apply calamine lotion regularly that’s going to be helpful