Objective: We previously tested topiramate, an anticonvulsant, in the treatment of aggression in men with borderline personality disorder (BPD) (Nickel M, Nickel C, Kaplan P, Lahmann C, Mühlbacher M, Tritt K, et al. Treatment of aggression with topiramate in male borderline patients: a double-blind, placebo-controlled study. Biol Psychiatry 2005;57:495-9), and found significant changes on most scales of the state-trait anger expression inventory (STAXI) and significant weight loss eight weeks later. The aim of this trial was to assess topiramate's efficacy in the long-term therapy for aggression in men with BPD.
Methods: This 18-month follow-up observation, in which the previous patients (topiramate group: n=22; former placebo group: n=22) were examined bianually, was carried out.
Results: According to the intent-to-treat principle, significant changes on all scales of the STAXI were observed in the subjects treated with topiramate. Additional significant weight loss was observed. All subjects tolerated topiramate relatively well.
Conclusions: Topiramate appears to be an effective, relatively safe agent in the long-term treatment of patients with BPD. Mild, non-transient weight loss can be expected.