Transtornos por uso de cannabis are characterised by the padrão and consequences of cannabis uso. Cannabis is the collective term for a range of psychoactive preparations of the cannabis plant, Cannabis sativa, and related species and hybrids. Cannabis contains cannabinoids, a class of diverse chemical compounds that act on endogenous cannabinoid receptors that modulate neurotransmitter release in the brain. The principal psychoactive cannabinoid is δ-9-tetrahydrocannabinol (THC). Cannabis is typically smoked in the form of the flowering heads or leaves of the marijuana plant; tobacco is often mixed com cannabis when smoked. There are also cannabis oils that are prepared from these same sources. These preparations vary considerably in their THC potency. Cannabis has predominantly central nervous system depressant effects and produces a characteristic euphoria that may be part of the presenting features of Cannabis intoxicação, which may also include impairment in cognitive and psychomotor functioning. Cannabis has dependência-producing properties resulting in Cannabis dependência in some people and Cannabis abstinência when uso is reduced or discontinued. Cannabis is associated com a range of Cannabis-Induced Mental transtornos.