Patients diagnosed with Borderline Personality disorder and BPDSI score is > or = 17 will be assigned for active tDCS session (NeuroConn, Germany) candidates will have 20-minute session per day for 10 weekdays in 2 weeks. Then they will attend short term psychotherapy session for 3 months.

A neurostimulation decivse that works be generating weak electric current via Electrodes. These electrodes placed on a specific cerebral location, where the defect assumed to be there) to modulate the neuronal activity. This neuronal modulation does not induce or fire action potential but it facilitate action potentials and cerebral interconnection as well corticolimbic connection)

Patients with BPD will complete UPPS impulsive behavioral scale, a self reported questionnaire, before the first tDCS session and after they complete the 10 sessions of tDCS sessions. this questionnaire consists of 45 questions with 4 likert scale range for each question. The questionnaire is divided into 4 subscales: Urgency, lack of premeditation, lack of perseverance, sensation seeking.

The BPD patients who attend the tDCS sessions and the short-term psychotherapy will be evaluated by one psychiatric with a semi-structured interview evaluation, Borderline Personality disorder Severity Index (BPDSI)