Anxiety can be crippling for some kids. They can get terrified of the dark, or they don't want to go to school or the thought of exams makes them fall to pieces. And symptoms like a racing heart and negative thoughts can be really scary for little kids as well as teenagers. Maggie Dent talks to psychologist Karen Young from Hey Sigmund about how to help your child tackle anxious moments and what you can do if you think your child has anxiety.