Borderline personality disorder (BPD) is characterized by a pervasive pattern of instability and impulsivity. Several North American prospective studies support the high level of mental health care utilization in this population. There is little data in other systems of health organization, such as France. Furthermore, little is known on the variables associated with the mental health service utilization among BPD patients.

The main objective was to compare the utilization of mental health care among BPD patients, to the general population and patients with another personality disorder (PD) and to describe the demographic and clinical factors associated with the group of patients who use the most health care.

Inclusion Criteria:

• Affiliated with the health insurance
• Inpatient Psychiatry

Exclusion Criteria:

• Patient in forced hospitalization
• chronic psychotic disorder, mania or hypomania state, known mental retardation.
• Patient does not speak or read French

First, four groups were composed: BPD, other PD, control groups for PD and other PD. The first two groups were recruited from a screening of inpatients including a self-administered questionnaire (Personality Disorder Questionnaire 4+). Matched controls (age, sex) composed the 3rd and 4th group (BPD control and other PD control). They were randomly chosen in the health database insurance previously used.