Developing new medicines and therapies, and confirming the efficacy of existing ones, is vital for public health and we do this through research. Research prompts us to question our practice and fuels change in healthcare services. Sussex Partnership NHS Foundation Trust has set up an ADHD and Mental Health Research Unit (AMHRU) in Horsham to specialise in research into ADHD (attention deficit hyperactivity disorder), a condition that is often underdiagnosed and has many misconceptions surrounding it.