In the diagnosis of an affective episode modern operational criteria do not take into account the peculiarities of clinical symptoms, and the criteria for affective disorders do not take into account important factors such as age of onset, family history and course of the disease.

Peculiarities of clinical symptoms were conducted at different stages of the flow of bipolar disorder in 120 patients with bipolar disorder (40 patients with a predominance of depressive symptoms, 30 patients with a predominance of manic symptoms, 50 patients eutimic period. Psychometric study using a questionnaire ‘bipolarity index’ (G. Sachs, 2004), which allows to estimate in points (from 0 to 20) if the patient has the five most characteristic signs of BAD: 1) description of the episode; 2) age of onset; 3) the course of the disease; 4) the effect of therapy; 5) heredity. It has been revealed that the clinical heterogeneity indicators index bipolarity in the first and fourth categories due to the phase of the disease (reflected in the outcome of the integral index of bipolarity on separate groups). Clinical examples of the evaluation of patients at index bipolarity in separate groups show that the individual index bipolarity of the individual patient may be too high and ultra-low regardless of the group bar. This scoring system takes the concept of bipolarity with categorical plane in a continuous, largely meets the needs of clinical practice and allows you to improve the quality of diagnosis and treatment of BAD.