The risk of violence associated with novel psychoactive substance misuse in patients presenting to acute mental health services.

Novel psychoactive substance (NPS) availability is increasing at a phenomenal rate and so is their associated misuse. Currently, the harms associated with NPS misuse are unclear. This report presents the initial findings of a continuing study looking into the impact of NPS misuse on admissions to an acute mental health facility in London. Violence preadmission and violence during admission have been found to be significant in NPS misusers compared to non-NPS substance misusers. Our findings have important consequences for acute mental health, emergency, and public health services. NPS misusers require specific assessment and risk management to reduce the risk of violence towards others.