It develops against the background of withdrawal syndrome or in a state of prolonged binge. There is a delusion of persecution, which consists in a delusional (not true) assessment of the behavior of others. Separate phrases, gestures, facial expressions are given special importance, as obvious hints of a threat to their life, reprisals against them. Patients are anxious, confused, see persecutors in almost every one they meet. The behavior of patients is determined by the content of delusions and is impulsive, i.e. it can be expressed by sudden unpredictable actions (attack on imaginary enemies, flight, jumping from a transport, from a window, suicidal attempts).
The duration of psychosis is from several days to several weeks. Signs of confusion, as a rule, are absent.