Hello everyone! Could you please tell me if anyone has experienced som…

Hello everyone! Could you please tell me if anyone has experienced something like this? My daughter has a bluish tint on her forehead when she gets stressed. What could it be and what doctor should I consult? It used to be less frequent. A month ago we had a routine ultrasound of all organs, everything was fine. I'm very worried, my husband says it might be veins or something, it will pass. My sons haven't had this problem. We're going to see a pediatrician in a few days, I'll show them and ask. But I would like to hear from someone who has encountered something similar.