A patient of a somatic hospital has got psychomotor agitation as a result of high fever: he tried to run about the department; thought that some water was running down the walls, he pretended to see rats and cockroaches on the floor. Claimed he were in a hostel, recognized his "aquaintances". After introduction of sedative drugs he fell asleep. In the morni- ng he remembered this condition. What psychopathologic syndrome is it?