Transtornos por uso de nicotina are characterised by the padrão and consequences of nicotine uso. Nicotine is the active dependência-producing constituent of the tobacco plant, Nicotiana tabacum. Nicotine is used overwhelmingly through smoking cigarettes. Increasingly, it is also used in electronic cigarettes that vaporize nicotine dissolved in a carrier solvent for inhalation (i.e., “vaping”). Pipe smoking, chewing tobacco and inhaling snuff are minor forms of uso. Nicotine is a highly potent addictive compound and is the third most common psychoactive substance used worldwide after caffeine and alcohol. Nicotine dependência and Nicotine abstinência are well described and Nicotine-Induced Mental transtornos are recognized.