Self-embedding
Self-embedding is defined as the insertion of foreign objects into soft tissues either under the skin or into muscle. Self-embedding is typically considered deliberate self-harm, also known as nonsuicidal self-injury, which is defined as "deliberate, direct destruction of tissues without suicidal intent."
Controversy
Based on the review of the literature it is unclear whether self-embedding falls under the definition of deliberate self-harm. Some studies include self-embedding as a deliberate self-harm behavior while others exclude it. Most definitions of deliberate self-harm include the stipulation that the behavior is performed without conscious suicidal intent. The connection between self-embedding and suicidal ideation is unclear. Although most self-injurious behaviors are not associated with suicidal intentions, self-embedding has been found to be associated with suicidal ideation. A study found that suicidal ideation is the most commonly reported reason for self-embedding, however not all acts of self-embedding are accompanied with suicidal ideations. Additionally, most people that partake in self-embedding behavior report having previous suicidal attempts and suicidal ideations. Other distinctions between self-embedding and other self-injurious behaviors are that self-embedding is highly comorbid with behavioral health diagnoses and has a high prevalence of repetitive behavior. Self-embedding is similar to other forms of self-injury in that one of the purposes of engaging in the behavior is to relieve emotional distress by inflicting physical pain.