My 16mth old son seems to be petrified of other poeple and not just strangers. The only people he's comfortable with are myself, his dad and 1 of his grandparents (she looks after him twice a week while I work). As soon as he sees other members of my family and my husbands family or any friends he screams (and it's generally when me or his dad's there), gets extremely upset and is inconsolable. This has been happening for 2-3 months now and it's really upsetting me as I feel I don't want to go visit anyone. The only way he stops is to leave him on his own. There is no pattern whatsoever that I can see as to who he cries at. Any advice please?