 The investigators hypothesize that the NF protocol will enhance affective stability, thus improving daily functioning and quality of life among PMDD patients, without the need for pharmacological agents, intrusive techniques or time consuming interventions. Moreover, this treatment method is individually tailored to the needs and symptoms of the patient and can be used periodically rather than continuously. The patient remains in control throughout the procedure, and can potentially learn to use this technique on a continuous basis, beyond the scope of the clinical trial. 