Abstract
Suicidal behaviour in adolescents can take many forms including suicidal thoughts, gestures, threats, attempts, and completions. Non suicidal self injury (NSSI) is also regarded as part of the spectrum. The relationship of these behaviours with other forms of self destructive behavior is debatable. The epidemiology of suicidal behaviors is quite dramatic with huge increases in incidence in the last century followed by significant decreases in recent years. Knowledge of risk factors has also increased and they include social, biological, psychological and psychiatric influences. Different personality constellations may account for different findings in this complex field. There have been advances in both psychological and biological therapies as well as in primary preventative measures. These issues will be discussed in a critical fashion with an emphasis on the authors work in this field.
Keywords: suicidal behaviour; non suicidal self injury.

Presentation
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