Good evening, when guests come to us or have an appointment with a ped…

Good evening, when guests come to us or have an appointment with a pediatrician, my daughter starts crying and screaming, just as soon as someone looks at her, on the street if she reacts normally to unfamiliar people, maybe someone has had this too, what did they do? Maybe it will pass by itself or should I go to a neurologist? (To the child is 8 months old).