The overall risk that a child will hurt him- or herself is small. But it is certainly possible for a child or teen to experience suicidal thoughts or, sadly, to die by suicide. While the risk tends to be highest during the teen years, children as young as 5 have been known to think about or die by suicide. Parents can help by learning to recognize common warning signs of suicidality (like sudden changes in mood, frequent talk about "going away" or dying, or risky, impulsive behavior), seeking mental healthcare for children who may be at risk, and fostering an environment where children feel safe talking about their emotions and their challenges.
For more, see Children, Teens, and Suicide Risk.