Amphetamines, cocaine and methylenedioxymethamphetamine (MDMA, ‘ecstasy’) have been prominent on the UK drugs scene over the past decade. Much cocaine is now in the form of ‘crack’, which produces particularly acute versions of well-known complications including paranoid psychosis, mood disorders and cardiovascular problems. Ecstasy has additional hallucinogenic properties, and the slightly different range of psychiatric effects can be long-lasting. Assessment for stimulant misuse should include drug screening more than is currently common in general settings. Management comprises psychosocial (particularly behavioural counselling) and pharmacological approaches. A wide range of dopaminergic and other medications have been studied in cocaine misuse, and specialised substitute prescribing may be appropriate for heavy amphetamine injecting. There has been recent focus on problems of dual diagnosis, with particular strategies required to address stimulant misuse by people with severe mental illnesses.