Thankfully boys grow out of it but girls can hit that frequency that cuts the skin.
The general rule is no screaming without a good reason.
As for those without parenting experience there isn't anything you can do short of killing the infant to get it quiet. They go from struggling to inconsolable which is literally a place where they have to exhaust themselves before they calm down. If the parent could quiet the kid they would.
I've experienced it a few times and despite all my experience and skills the child couldn't be soothed until tired enough to respond positively. In most cases it's less than 90 minutes unless there's a physical reason. Then it can be 8 hours. Bless the parents with children with damaged biology.
The general rule is no screaming without a good reason.
As for those without parenting experience there isn't anything you can do short of killing the infant to get it quiet. They go from struggling to inconsolable which is literally a place where they have to exhaust themselves before they calm down. If the parent could quiet the kid they would.
I've experienced it a few times and despite all my experience and skills the child couldn't be soothed until tired enough to respond positively. In most cases it's less than 90 minutes unless there's a physical reason. Then it can be 8 hours. Bless the parents with children with damaged biology.