Having a dual diagnosis poses problems for clients. Rebecca Chester discusses the implications for nurses

Service users are susceptible to developing personality disorders, but for them the diagnosis can be particularly difficult. The author reviews the debates about diagnosis, treatment and management of these conditions and describes developments in the relevant services. She suggests that as treatment for these clients is thought to be impossible, they are at risk of experiencing overly restrictive practices unless learning disability and mental health staff have appropriate training and agree to work together.