Self-harm (SH) or deliberate self-harm (DSH) includes self-injury (SI) and self-poisoning and is defined as the intentional, direct injuring of body tissue without suicidal intent. The most common form of self-harm is skin cutting but self-harm also covers a wide range of behaviours including burning, scratching, banging or hitting body parts, interfering with wound healing, hair pulling (trichotillomania) and the ingestion of toxic substances or objects.