SIB, obsessions, compulsions, tic severity, attention deficit hyperactivity disorder related impulsivity, risk taking behaviours, and rages were systematically assessed in all subjects. Objective: This study examined the relationship between SIB and other behavioural features that commonly co-occur with TS in nearly 300 subjects with TS participating in three genetic studies. Although SIB occurs in up to 60% of individuals with TS, and can cause significant clinical impairment and distress, little is known about its aetiology. Correspondence to: Dr C A Mathews Department of Psychiatry University of California, San Diego, 9500 Gilman Dr, 0810, La Jolla, CA 92093-0810 īackground: Self injurious behaviour (SIB), the deliberate, repetitive infliction of self harm, is present in a wide variety of neuropsychiatric disorders, including Tourette syndrome (TS).9Department of Psychiatry, University of California, San Francisco, CA, USA.8Departments of Psychiatry and Human Genetics, University of California, Los Angeles, Los Angeles, CA, USA.7Department of Neurology, University of Texas Southwestern Medical School, Dallas, TX, USA.

6Department of Neurology, Cleveland Clinic Foundation, Cleveland, OH, USA.5Department of Psychiatry, North Shore University Hospital and New York University School of Medicine, Manhasset, New York, USA.4Departments of Psychiatry and Pediatrics, University of Costa Rica School of Medicine, San José, Costa Rica.3Department of Psychiatry, Division of Child and Adolescent Psychiatry, University of California, San Francisco, San Francisco, CA, USA.

2Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA.

1Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA.

Tsplus advanced security questionnaire