Shirshova M B
Zh Nevrol Psikhiatr Im S S Korsakova. 1998;98(4):32-6.
75 patients were observed. Variants of the disease were identified which differed by premorbid state, age of both onset and manifestations of the disease, number of attacks, their psychopathologic structure and duration of melancholic depression as well as by changes of personality. The disease coursed as shift-like progredient schizophrenia with bipolar disorders in structure of pure affective attacks, shift-like progredient schizophrenia with monopolar depressions in structure of affective attacks, shift-like progredient schizophrenia with affective and affective-delirious attacks, intermediate variant of the disease between manic-depressive psychosis and shift-like progredient schizophrenia.