BACKGROUND: The postpartum period is a time when women are vulnerable to depressive disorders, which can be severe and have long-lasting adverse sequelae. In spite of multiple contacts with health care providers, women with postpartum depression often remain unrecognized and untreated. To evaluate the association between estradiol and postpartum depression, we measured serum estradiol concentration and performed an open-label study of physiologic 17beta-estradiol.
METHOD: Twenty-three women fulfilling ICD-10 criteria for major depression with postpartum onset were consecutively recruited from a psychiatric emergency unit. Serum estradiol concentrations were measured at baseline and weekly during sublingual 17beta-estradiol treatment for 8 weeks. The treatment effect was assessed using a clinician-rated depression symptom scale, the Montgomery-Asberg Depression Rating Scale (MADRS).
RESULTS: At baseline, all patients were severely depressed (mean MADRS total score = 40.7; range, 35-45) and had a low serum estradiol concentration (mean = 79.8 pmol/L; range, 23-140 pmol/L); in 16/23 patients, the concentration was even lower than the threshold value for gonadal failure. During the first week of estradiol treatment, depressive symptoms diminished significantly, resulting in a mean MADRS score of 11.0 (Z = -4.20, p