Think I need some help for my ds2 aged 6. Perfectly behaved at school but a nightmare at home. Loses temper very easily, throws things, runs away if we are out, lashes out at me, my dh and ds1 and ds3. Can be very aggressive. Where can I go for some help? Too old for HV I think? Don't think school will help because he is no problem at school? Do I have to go to GP? Thanks.