Self-harm in young people is a major problem. As many as 1-in-6 teenagers have self-harmed at some point in their lives, and self-harm is particularly common between the ages of 10 and 16 years. Young people who self-harm seem to be more likely to do poorly in a number of ways in early adulthood, including being more likely to have a mental health problem, and to use substances like alcohol and drugs. It is also the strongest known risk factor for suicide. Although self-harm is very common in young people, most do not seek help. In this project we plan to investigate whether individuals who self-harm are visiting their GP and, if so, what they are visiting the GP for and how often. We would also like to identify what proportion of teenagers who have self-harmed are picked up by their GP and whether there are important differences between those who are picked up by their GP and those who are not.