Recent trends relating to psychoactive substances use and synthetic substances components

In order to complete the sources in existence, this system attempts to set up an approach enabling to detect the emerging phenomena, to understand the contexts, the modes of use and the various consequences of using these substances, and to follow up their evolution. 

Although still carried out on an experimental basis, this system is intended to bring out tendencies observed in two consumption environments: with 10 urbanized areas accounted for observation, the urban environment covers the populations who use corresponding psychoactive substances, rather characterized by "problematic" modes of uses, in touch with treatment and accommodation facilities, notably those said to be "with a low threshold"; whereas the party environment mainly concerns the festive use of populations moving around in venues broadcasting a certain kind of music called techno, as well as in night-clubs.