MY SON IS FIVE AND MORE RECENTLY HIS BEHAVIOUR HAS BEEN STRANGE. AN EXAMPLE IS THAT HIS BROTHER TRIPPED OVER HIS BIKE AND MY FIVE YEAR OLD REPLIED YOU NEED STABILISERS ON YOUR BIKE LIKE ME. HIS BROTHER AND FRIEND LAUGHED AND HE TOOK IT THAT THEY WERE LAUGHING AT HIM AND STORMED IN IN TEARS SAYING THEY WERE BEING HORRIBLE TO HIM. HE ALSO LOOSES HIS TEMPER VERY EASILY TOO AND PUNCHES THINGS. WHEN HE HURTS HIMSELF IT SOUNDS LIKE SOMEONES ABOUT TO MURDER HIM! IS THIS NORMAL OR DO YOU THINK HE NEEDS HELP. PLS ADVISE