Typology of disordered eating behaviour (anorexia nervosa with bulimia and vomitomanic disturbances) in children and adolescents

Eighty children (66 girls and 14 boys), aged 6-16 years, with syndrome of anorexia nervosa (AN) have been studied. Two nosologic groups: pathological age crisis of childhood and adolescence (F50.0-F50.2 in ICD-10) - 30 patients and slow-progressive schizophrenia (schizotypical disorder, F21.3-F21.4) - 50 patients are determined. The latter group was divided according to syndrome types: syndrome of AN (28 patients); AN syndrome with predominant bulimia (11 patients); AN syndrome with dominating bulimia and vomitomanic disturbances (11 patients). Syndrome structure was determined by the stages of the course, syntropy character with other psychopathological disorders and process of their reduction. Psychotic disorders in patients of the third type were most pronounced. In each group, statistically significant EEG features, comparing to control age-matched group, were revealed. The severer were psychopathological symptoms, the less was an amount of organized and the more - desynchronized "flat" EEG.