Anxiety transtorno induced by multiple specified psychoactive substances is characterised by anxiety symptoms (e.g., apprehension or worry, fear, physiological symptoms of excessive autonomic arousal, avoidance behaviour) that develop during or soon after intoxicação com or abstinência from multiple specified psychoactive substances. The intensity or duration of the symptoms is substantially in excess of anxiety symptoms that are characteristic of intoxicação com or abstinência from multiple specified psychoactive substances. The amount and duration of uso of the multiple specified psychoactive substances must be capable of producing anxiety symptoms. The symptoms are not better explained by a primary mental transtorno (e.g., an Anxiety and fear-related transtorno, a Depressive transtorno com prominent anxiety symptoms), as might be the case if the anxiety symptoms preceded the onset of the uso of the multiple specified psychoactive substances, if the symptoms persist for a substantial period of time after cessation of the uso of the multiple specified psychoactive substances or abstinência from the multiple specified psychoactive substances, or if there is other evidence of a pre-existing primary mental transtorno com anxiety symptoms (e.g., a history of prior episodes not associated com the uso of the multiple specified psychoactive substances).