Self-Injury in Epilepsy: Not the Severe Subgroup Clinicians Assume

Non-suicidal self-injury (NSSI) is common in people with epilepsy and is a documented precursor of suicide attempts, so clinical intuition has long held that a patient who both has epilepsy and self-injures must be a more severely disturbed case. The team from the Moscow Research and Clinical Center for Neuropsychiatry, with senior authorship from Pirogov Russian National Research Medical University, set out to test exactly that intuition — and found it does not hold. They enrolled 42 consecutive patients with epilepsy plus a non-psychotic mental disorder who engaged in NSSI, and compared them with 126 age- and sex-matched self-injuring patients without epilepsy, a 1:3 design that gives reasonable statistical reach for a single-center sample.

Each participant was examined by a psychiatrist and completed a dense battery: the Self-Injurious Thoughts and Behaviors Interview, the Inventory of Statements About Self-Injury, the Brief Reasons for Living Inventory, the Childhood Abuse and Trauma Scale, a modified DSM-5/ICD-11 personality inventory, the Beck Depression Inventory, the State-Trait Anxiety Inventory, and the WHO Quality of Life instrument. This is a notably thorough phenotyping effort, and its breadth is what makes the null result informative rather than merely underpowered.

The central hypothesis — that epilepsy marks a more severely affected NSSI subgroup — was not supported. Once multiple-comparison correction was applied, the epilepsy and non-epilepsy groups looked clinically alike on the dimensions that matter most for risk stratification: mood, anxiety, suicidality, personality pathology, and quality of life. Where they differed, the epilepsy group looked, if anything, lower-risk on conventional markers, with a trend toward a less severe self-injury trajectory.

Why the comorbidity does not amplify severity

The practical reading is that comorbid epilepsy should not by itself escalate a clinician's NSSI risk estimate. The mechanistic reading is more interesting: if self-injury in epilepsy is not simply a more intense version of the general pattern, its emotional drivers may be partly distinct — closer to ictal and interictal mood instability than to the trauma-and-personality axis that dominates NSSI in psychiatric samples. That reframes self-injury here as one maladaptive coping route among several converging pathways rather than a single severity gradient.

Implications for assessment

Clinicians who treat epilepsy should still screen for NSSI — it is prevalent and clinically meaningful — but should resist treating the seizure disorder as an automatic severity multiplier. Conversely, the lower prevalence of substance and behavioral risk markers in this group cautions against importing a generic NSSI risk template wholesale. Formulation should attend to seizure-linked affective dysregulation as a candidate driver, and management of self-injury in epilepsy may warrant emotion-regulation targets distinct from those used in trauma-driven presentations.