Aim. The aim of this study was an analysis of data collected from the case histories of female patients with a diagnosis of bulimia nervosa, who underwent medical treatment at the Psychiatry Department of the Medical University of Lublin in the years 1993 - 2003. Methods. 53 female patients with a mean age of 22 years, the age of disease onset - 17.5 years, and mean BMI = 22.3. In this group 58.5% of the patients had secondary level education, primary level - 24.5%, vocational - 3.8% and higher level education - 7%. Most patients were city inhabitants (64.2%), and lived together with their parents (85%). Results. Half of the patients were brought up in a complete family, whilst the most frequent cause of being brought up by a single parent was the death of the other parent (26.4%). In this group 54.7% of the patients continued their studies, 13.2% worked and 32% were unemployed. More than half of the patients assessed their relationship both with their fathers (54.7%) and their mothers (58.5%) negatively. 20.8% of the patients were victims of physical violence and 18.8% - of sexual abuse. Alcohol was abused by 56.6% of their fathers, 7.5% of their mothers and 18.6% of the patients themselves. A life history of suicide was present in 13.2% of the patients. More mothers (13.2%) compared to the patients' fathers (1.9%), suffered from chronic somatic diseases and mental disturbances; 3.8% of the patients' siblings developed eating disorders. In conclusions we compared data received from patients with anorexia nervosa with data from patients with bulimia. Conclusions. Female patients with a purging type of anorexia are similar to female patients with bulimia in many socio-demographic factors, and at the same time they differ from female patients with a restricting type of anorexia.