My daughter is 13 and she is on her 4th menstral cycle. This rash showed up the day she started her period this week and has gotten worse each day. She only has the rash on her arms from shoulder to fingers and legs from hips to toes. She hasn’t changed anything in her normal daily life. We tried different pads the second day of her period because thought maybe she was allergic to the ones she had. I’m going to take her to the doctor if it’s not gone by Monday but I’m just baffled by this. Any input!???!!