Catatonia associated com another mental transtorno is a syndrome of primarily psychomotor disturbances, characterized by the co-occurrence of several symptoms of decreased, increased, or abnormal psychomotor activity, which occurs in the context of another mental transtorno, such as Esquizofrenia ou outros transtornos psicóticos primários, Transtornos de humor, and Transtornos do neurodesenvolvimento, especially Transtorno do espectro autista.