Inclusion Criteria:  Medication-free women with moderate to severe MD episode according to the Montgomery Asberg Depression Rating Scale (MADRS>7), and peripartum onset, diagnosed before delivery or between the second week and month 6 postpartum Between 18-45 years of age Pregnancy to term Uncomplicated delivery to a healthy newborn Must be able to manage the technical aspects of the intervention.  Exclusion Criteria:  tDCS contraindications Previous experience with tDCS Mental health disorder other than unipolar depression or anxiety Suicidal ideation.