The Role of Estrogen and Progesterone Fluctuations in the Pathogenesis of Postpartum Psychosis: A Neurobiological Review
Abstract
Postpartum psychosis is an acute psychiatric disorder characterized by rapid onset following childbirth, posing significant risks to both maternal and neonatal safety. Its underlying mechanisms remain incompletely understood; however, fluctuations in reproductive hormones particularly estrogen and progesterone are strongly implicated in its pathogenesis. The abrupt decline of these hormones after delivery may disrupt neurotransmitter systems, especially dopaminergic and GABAergic pathways, thereby precipitating neurobiological imbalance in vulnerable individuals. This study employs a literature review method using a narrative review approach, drawing upon databases such as PubMed, ScienceDirect, and Google Scholar, complemented by manual searches. Following the PRISMA framework, a total of 20 articles met the inclusion criteria and were systematically analyzed. The findings indicate that estrogen demonstrates a more consistent association with psychotic symptomatology, whereas progesterone exerts its effects primarily through its metabolite, allopregnanolone, which modulates the GABAergic system. In addition, genetic predisposition, sleep disturbances, and alterations in neuroplasticity contribute to the condition. Postpartum psychosis therefore emerges as a multifactorial disorder resulting from the complex interplay between hormonal fluctuations and underlying neurobiological vulnerability.
References
Bergink, V., Akbarian, S., Byatt, N., Chandra, P. S., Cirino, N., Dazzan, P., De Witte, L., Di Florio, A., Dolman, C., Jones, I., Kamperman, A., Mahjani, B., Meltzer-Brody, S., Munk-Olsen, T., Nagle-Yang, S., Osborne, L. M., Rasgon, N., Robakis, T., Thippeswamy, H., … Payne, J. L. (2025). Postpartum Psychosis and Bipolar Disorder: Review of Neurobiology and Expert Consensus Statement on Classification. Biological Psychiatry. https://doi.org/10.1016/j.biopsych.2025.10.016
Davies, W. (2017). Understanding the Pathophysiology of Postpartum Psychosis: Challenges and New Approaches. World Journal of Psychiatry, 7(2), 77. https://doi.org/10.5498/wjp.v7.i2.77
Deligiannidis, K. M., Kroll-Desrosiers, A. R., Mo, S., Nguyen, H. P., Svenson, A., Jaitly, N., Hall, J. E., Barton, B. A., Rothschild, A. J., & Shaffer, S. A. (2016). Peripartum Neuroactive Steroid and Y-Aminobutyric Acid Profiles in Women At-Risk for Postpartum Depression. Psychoneuroendocrinology, 70, 98–107. https://doi.org/10.1016/j.psyneuen.2016.05.010
Dukic, J., Johann, A., Henninger, M., & Ehlert, U. (2024). Estradiol and Progesterone from Pregnancy to Postpartum: a Longitudinal Latent Class Analysis. Frontiers in Global Women’s Health, 5. https://doi.org/10.3389/fgwh.2024.1428494
Gilfarb, R. A., & Leuner, B. (2022). GABA System Modifications During Periods of Hormonal Flux Across the Female Lifespan. Frontiers in Behavioral Neuroscience, 16. https://doi.org/10.3389/fnbeh.2022.802530
González-Rodríguez, A., & Seeman, M. V. (2019). The Association between Hormones and Antipsychotic Use: A Focus on Postpartum and Menopausal Women. Therapeutic Advances in Psychopharmacology, 9. https://doi.org/10.1177/2045125319859973
Grötsch, M. K., & Ehlert, U. (2024). Allopregnanolone in the Peripartum: Correlates, Concentrations, and Challenges – A Systematic Review. Psychoneuroendocrinology, 166, 107081. https://doi.org/10.1016/j.psyneuen.2024.107081
Humby, T., Cross, E. S., Messer, L., Guerrero, S., & Davies, W. (2016). A Pharmacological Mouse Model Auggests a Novel Risk Pathway for Postpartum Psychosis. Psychoneuroendocrinology, 74, 363–370. https://doi.org/10.1016/j.psyneuen.2016.09.019
Humby, T., & Davies, W. (2019). Brain Gene Expression in a Novel Mouse Model of Postpartum Mood Disorder. Translational Neuroscience, 10(1), 168–174. https://doi.org/10.1515/tnsci-2019-0030
Isik, M. (2022). Investigation of Hormone Levels in Postpartum Psychosis. Dusunen Adam:The Journal of Psychiatry and Neurological Sciences. https://doi.org/10.14744/DAJPNS.2022.00171
Khedr, E. M., Ramadan, E. S., Osman, M. N., & Ahmed, G. K. (2023). Risk Factors-Related First Episode Postpartum Psychosis among Egyptian Women: the Role of Psychosocial and the Biological Factors. The Egyptian Journal of Neurology, Psychiatry and Neurosurgery, 59(1), 51. https://doi.org/10.1186/s41983-023-00653-3
Li, H. J., Martinez, P. E., Li, X., Schenkel, L. A., Nieman, L. K., Rubinow, D. R., & Schmidt, P. J. (2020). Transdermal Estradiol for Postpartum Depression: Results from a Pilot Randomized, Double-Blind, Placebo-Controlled Study. Archives of Women’s Mental Health, 23(3), 401–412. https://doi.org/10.1007/s00737-019-00991-3
Mu, E., Gurvich, C., & Kulkarni, J. (2024). Estrogen and Psychosis a Review and Future Directions. Archives of Women’s Mental Health, 27(6), 877–885. https://doi.org/10.1007/s00737-023-01409-x
Nehls, S., Losse, E., Enzensberger, C., Frodl, T., & Chechko, N. (2024). Time-Sensitive Changes in the Maternal Brain and Their Influence on Mother-Child Attachment. Translational Psychiatry, 14(1), 84. https://doi.org/10.1038/s41398-024-02805-2
Palacios-Hernández, B., Ramírez-Alvarado, G., Téllez-Alanís, B., Lino-González, A. L., Penagos-Rivera, M., & Hernández-Galván, A. (2024). Hormones, Psychotic Disorders, and Cognition in Perinatal Women: a Mini Review. Frontiers in Psychiatry, 14. https://doi.org/10.3389/fpsyt.2023.1296638
Paternina-Die, M., Martínez-García, M., Martín de Blas, D., Noguero, I., Servin-Barthet, C., Pretus, C., Soler, A., López-Montoya, G., Desco, M., & Carmona, S. (2024). Women’s Neuroplasticity during Gestation, Childbirth and Postpartum. Nature Neuroscience, 27(2), 319–327. https://doi.org/10.1038/s41593-023-01513-2
Patterson, R., Balan, I., Morrow, A. L., & Meltzer-Brody, S. (2024). Novel Neurosteroid Therapeutics for Post-Partum Depression: Perspectives on Clinical Trials, Program Development, Active Research, and Future Directions. Neuropsychopharmacology, 49(1), 67–72. https://doi.org/10.1038/s41386-023-01721-1
Patterson, R., Krohn, H., Richardson, E., Pearson, C., Xia, K., Kimmel, M., & Meltzer-Brody, S. (2025). Open-Label Study of the Efficacy, Safety and Tolerability of Brexanolone in the Treatment of Adult Women with Postpartum Psychosis. General Hospital Psychiatry, 97, 237–240. https://doi.org/10.1016/j.genhosppsych.2025.10.017
Perry, A., Gordon-Smith, K., Jones, L., & Jones, I. (2021). Phenomenology, Epidemiology and Aetiology of Postpartum Psychosis: A Review. Brain Sciences, 11(1), 47. https://doi.org/10.3390/brainsci11010047
Perry, A., Gordon-Smith, K., Lewis, K. J. S., Di Florio, A., Craddock, N., Jones, L., & Jones, I. (2024). Perinatal Sleep Disruption and Postpartum Psychosis in Bipolar Disorder: Findings from the UK BDRN Pregnancy Study. Journal of Affective Disorders, 346, 21–27. https://doi.org/10.1016/j.jad.2023.11.005
Pestana, J. E., Kershaw, K. A., & Graham, B. M. (2023). The Impact of the Ovarian Cycle on Anxiety, Allopregnanolone, and Corticotropin Releasing Hormone Changes after Motherhood in Female Rats and Women. Translational Psychiatry, 13(1), 183. https://doi.org/10.1038/s41398-023-02480-9
Pinna, G., Almeida, F. B., & Davis, J. M. (2022). Allopregnanolone in Postpartum Depression. Frontiers in Global Women’s Health, 3. https://doi.org/10.3389/fgwh.2022.823616
Reddy, D. S. (2023). Neuroendocrine Insights into Neurosteroid Therapy for Postpartum Depression. Trends in Molecular Medicine, 29(12), 979–982. https://doi.org/10.1016/j.molmed.2023.07.006
Sha, Q., Achtyes, E., Nagalla, M., Keaton, S., Smart, L., Leach, R., & Brundin, L. (2021). Associations between Estrogen and Progesterone, the Kynurenine Pathway, and Inflammation in the Post-Partum. Journal of Affective Disorders, 281, 9–12. https://doi.org/10.1016/j.jad.2020.10.052
Thippeswamy, H., & Davies, W. (2021). A New Molecular Risk Pathway for Postpartum Mood Disorders: Clues from Steroid Sulfatase–Deficient Individuals. Archives of Women’s Mental Health, 24(3), 391–401. https://doi.org/10.1007/s00737-020-01093-1
Toor, R., Wiese, M., Croicu, C., & Bhat, A. (2024). Postpartum Psychosis: A Preventable Psychiatric Emergency. Focus, 22(1), 44–52. https://doi.org/10.1176/appi.focus.20230025
Tsokkou, S., Kavvadas, D., Georgaki, M.-N., Papadopoulou, K., Papamitsou, T., & Karachrysafi, S. (2024). Genetic and Epigenetic Factors Associated with Postpartum Psychosis: A 5-Year Systematic Review. Journal of Clinical Medicine, 13(4), 964. https://doi.org/10.3390/jcm13040964
Meltzer-Brody, S., Howard, L. M., Bergink, V., Vigod, S., Jones, I., Munk-Olsen, T., ... & Milgrom, J. (2018). Postpartum psychiatric disorders. Nature reviews Disease primers, 4(1), 1-18. https://doi.org/10.1038/nrdp.2018.22
Sit, D., Rothschild, A. J., & Wisner, K. L. (2006). A review of postpartum psychosis. Journal of women's health, 15(4), 352-368. https://doi.org/10.1089/jwh.2006.15.352
Sanadi, R., Raj, E. A., Kuppusamy, C. V., Arasappa, R., & Chandra, P. S. (2026). Navigating postpartum psychosis: perspectives, needs, expectations and experiences of women and their families–a systematic review. Archives of Women's Mental Health, 29(2), 40. https://doi.org/10.1007/s00737-025-01669-9
Camoni, L., Bernardini, C., & Gigantesco, A. (2026). Antepartum and Postpartum Mental. Telepsychotherapy and Mental Health Services: Evidence-based Therapeutic Approaches, 295.
Özdilek, R., Aksoy, S. D., & Dincel, Y. (2026). Effect of Postpartum Mood Education on Maternity Blues and Postpartum Depression in Mothers: A Randomized Controlled Trial. Journal of Holistic Nursing, 08980101261435463. https://doi.org/10.1177/08980101261435463
Wenzel, E. S., Frye, R., Roberson-Nay, R., & Payne, J. L. (2025). The neurobiology of postpartum depression. Trends in Neurosciences. https://doi.org/10.1016/j.tins.2025.05.005
Raji, H., Dinesh, S., & Sharma, S. (2025). Inside the impulsive brain: a narrative review on the role of neurobiological, hormonal and genetic factors influencing impulsivity in psychiatric disorders. The Egyptian Journal of Neurology, Psychiatry and Neurosurgery, 61(1), 4. https://doi.org/10.1186/s41983-024-00930-9
Naoi, M., Wu, Y., Maruyama, W., & Shamoto-Nagai, M. (2025). Phytochemicals modulate biosynthesis and function of serotonin, dopamine, and norepinephrine for treatment of monoamine neurotransmission-related psychiatric diseases. International journal of molecular sciences, 26(7), 2916. https://doi.org/10.3390/ijms26072916
Mallick, K., Ruwatia, R., Mondal, A. C., & Banerjee, S. (2026). Neurosteroids in Neurological and Psychiatric Disorders: Therapeutic Implications. CNS & Neurological Disorders-Drug Targets. https://doi.org/10.2174/0118715273411580251203115939
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