transtornos due to uso of MDMA or related drugs, including MDA are characterised by the padrão and consequences of MDMA or related drug uso. MDMA is methylene-dioxymethamphetamine and is a common drug of abuse in many countries especially among young people. It is predominantly available in tablet form known as ‘ecstasy’. Pharmacologically, MDMA has stimulant and empathogenic properties and these encourage its uso among young people for social and other interactions. Considering its wide prevalence in many countries and among many sub-groups of young people, MDMA and Related Drug dependência and MDMA and Related Drug abstinência are comparatively uncommon. Substance-Induced Mental transtornos may arise from its uso. Several analogues of MDMA exist, including MDA (methylene-dioxyamphetamine).