Hormones can absolutely cause psychosis, and the list of hormones capable of doing so is longer than most people realize. Thyroid hormones, cortisol, estrogen, parathyroid hormone, and even testosterone in supraphysiological doses have all been documented as triggers for hallucinations, delusions, and disordered thinking. The connection runs in both directions: certain hormonal imbalances directly produce psychotic symptoms, and shifts in hormone levels can worsen psychosis in people who already have a psychiatric condition. What makes this clinically tricky is that hormone-driven psychosis often looks identical to a primary psychiatric illness, which means the underlying endocrine cause can go undiagnosed for months or years.
Thyroid Disorders and Psychosis
The thyroid gland punches well above its weight when it comes to mental health. Both too little and too much thyroid hormone can push the brain into psychotic territory, though the mechanisms differ.
Severe hypothyroidism can produce a condition historically called “myxedema madness.” A pooled analysis of 75 reported cases found that delusions appeared in about 91% of patients, with persecutory ideas being the most common type, and hallucinations occurred in roughly 78%. About half of the patients had no prior diagnosis of hypothyroidism when their psychosis began, meaning the psychiatric crisis was the first sign that something was wrong with the thyroid.1PubMed Central. Myxedema Psychosis: Systematic Review and Pooled Analysis The good news is that thyroid hormone replacement can resolve the psychiatric symptoms entirely. One case report described complete resolution of delusions and auditory hallucinations within three weeks of starting thyroid medication.2PubMed Central. Myxedema Psychosis: Diagnostic Challenges and Management Strategies in Hypothyroidism-Induced Psychosis
On the opposite end, an overactive thyroid can also trigger psychosis. Thyrotoxicosis, the state of excess thyroid hormone in the blood, is thought to disrupt brain metabolism and neurotransmitter regulation, leading to symptoms that can include mania, paranoia, hyperexcitability, and insomnia.3Health Sciences Review. Psychosis secondary to thyrotoxicosis: An educational review In the most extreme scenario, thyroid storm, psychosis may be the very first symptom that brings someone to the emergency department. One reported case involved a young woman whose psychosis from thyroid storm did not respond to standard psychiatric medication and required surgical removal of the thyroid gland before her mental status returned to normal.4PubMed Central. Thyroid Storm Presenting as Psychosis A case of a 37-year-old man with Graves’ disease who had stopped taking his thyroid medication illustrates how uncontrolled hyperthyroidism can present with paranoia, agitation, and psychotic features severe enough to require physical restraints.5PubMed Central. Hyperthyroidism Presenting With Mania and Psychosis: A Case Report
There is also a subtler thyroid-related route to psychosis. Hashimoto’s encephalopathy is an autoimmune condition where antibodies against the thyroid cause inflammation in the brain. It can produce acute psychosis and fever in someone whose thyroid hormone levels may actually be close to normal, making it easy to miss. The condition responds to corticosteroid treatment rather than thyroid replacement, and patients can achieve complete remission of psychotic symptoms once the autoimmune inflammation is addressed.6PubMed Central. Psychotic Symptoms of Hashimoto’s Encephalopathy: A Diagnostic Challenge
Estrogen’s Protective Role and What Happens When It Drops
One of the most robust findings in psychiatric research is that estrogen appears to protect against psychosis. Women with schizophrenia tend to develop the illness later than men, often have a different clinical course, and show patterns of worsening that track closely with times in life when estrogen levels fall.7PubMed Central. Estrogens in schizophrenia: progress, current challenges and opportunities The evidence from both population studies and laboratory research points in the same direction: estrogen shields the brain against psychotic symptoms, and low-estrogen states increase vulnerability.8PubMed Central. Estrogen and psychosis – a review and future directions
This protective effect helps explain several clinical patterns that might otherwise seem unrelated. Symptom flare-ups and increased relapse risk tend to cluster during low-estrogen windows: the days around menstruation, the weeks after giving birth, and the transition into menopause.9The Lancet Psychiatry. Ovarian hormones and psychosis: a clinical review Each of these windows deserves a closer look.
The Menstrual Cycle
Clinicians have long noticed that some women with psychotic disorders get worse right around their periods. The phenomenon has been documented under various names, including “menstrual psychosis” and “catamenial psychosis,” and the case literature includes examples of psychotic episodes with onsets that are reliably timed to specific phases of the menstrual cycle.10PubMed Central. Menstrual psychosis A meta-analysis looking at psychiatric hospital admissions found that women were roughly 48% more likely to be admitted during the perimenstrual phase (the days just before and during menstruation, when estrogen and progesterone are at their lowest) compared to what would be expected by chance.11Schizophrenia Bulletin. Exacerbation of Psychosis During the Perimenstrual Phase of the Menstrual Cycle: Systematic Review and Meta-analysis That increase held across different studies, different diagnoses, and different decades of research.
Postpartum Psychosis
Postpartum psychosis is one of the most dramatic examples of hormone-driven psychiatric illness. Within days of delivery, estrogen and progesterone levels plummet to a fraction of what they were during pregnancy. In vulnerable individuals, this sudden hormonal withdrawal may disrupt the brain’s dopamine and GABA signaling pathways, triggering a rapid onset of psychosis that can include delusions, hallucinations, confusion, and wildly disorganized behavior.12Journal La Medihealtico. The Role of Estrogen and Progesterone Fluctuations in the Pathogenesis of Postpartum Psychosis: A Neurobiological Review The condition affects roughly one to two of every thousand deliveries and is considered a psychiatric emergency because of the risk of harm to both the mother and the infant.
Perimenopause and Later Life
Women show a heightened risk for psychosis in midlife that is not seen in men. The age range for this increased risk overlaps with perimenopause, the transitional years when menstrual cycles become irregular and estrogen production declines, though direct studies confirming menopause as the mechanism are still limited.13PubMed Central. Risk for midlife psychosis in women: critical gaps and opportunities in exploring perimenopause and ovarian hormones as mechanisms of risk What is well established is that women with schizophrenia begin to be hospitalized at higher rates than men starting around age 45, which coincides with the typical onset of perimenopause. One contributing factor may be that antipsychotic medications become less effective in women with low estrogen levels, meaning a drug regimen that kept someone stable for years can lose its effectiveness as hormones shift.14Schizophrenia Bulletin. Women with Schizophrenia-Spectrum Disorders After Menopause: A Vulnerable Group for Relapse
Cortisol, Stress Hormones, and the Brain
Cortisol, the body’s primary stress hormone, has a well-documented connection to psychosis that works through several pathways. The body’s stress-response system (often called the HPA axis) shows abnormalities in many people with psychotic disorders. A systematic review covering 77 studies found that average baseline cortisol levels were significantly elevated in people with schizophrenia compared to healthy controls in about 44% of studies, while most of the remaining studies found no significant difference.15PubMed Central. A systematic review of hypothalamic–pituitary–adrenal axis function in schizophrenia: implications for mortality People experiencing their first episode of psychosis tend to show both higher baseline stress-hormone activity and, paradoxically, a blunted cortisol response when actually placed under stress.16PubMed. A systematic review of the activity of the hypothalamic-pituitary-adrenal axis in first episode psychosis In people at ultra-high risk of developing psychosis, this blunted stress response has been linked to reductions in brain grey matter volume in areas associated with vulnerability to psychotic disorders.17PubMed Central. HPA-axis function and grey matter volume reductions: imaging the diathesis-stress model in individuals at ultra-high risk of psychosis
When cortisol is elevated not because of subtle axis dysregulation but because the body is overproducing it, the psychiatric effects become more obvious. Cushing’s syndrome, caused by prolonged exposure to high cortisol levels, can present with acute psychosis as the very first symptom. One reported case involved a patient whose psychotic agitation was so severe that she was admitted to a psychiatric hospital for a month before the underlying cortisol excess was identified. Her psychotic symptoms did not fully resolve until five months after surgical correction of the cortisol-producing tumor.18PubMed Central. Cushing’s Syndrome With Acute Psychosis: A Case Report Psychosis in Cushing’s syndrome appears most often in cases with the most extreme cortisol elevations, particularly in patients with adrenal tumors.19South African Journal of Psychiatry. Neuropsychiatric symptoms in a patient with Cushing’s syndrome
Prescription Steroids and Psychosis
You do not need an adrenal tumor to experience cortisol-related psychosis. Corticosteroid medications like prednisone, which are widely prescribed for conditions ranging from asthma to autoimmune diseases, are a well-known trigger. The general rule of thumb has been that doses of 40 mg per day or more carry the highest risk, but case reports demonstrate that psychosis can also occur at lower doses, meaning doctors cannot safely rule it out based on dose alone.20PubMed Central. Four Case Reports of Acute Psychosis Secondary to Low Doses of Prednisone/Prednisolone Steroid-induced psychosis typically begins within the first few weeks of starting the medication and usually resolves once the steroid is tapered or stopped, though the resolution is not always immediate.
If you are taking a corticosteroid and begin experiencing unusual thoughts, paranoia, hearing things that are not there, or a dramatic shift in mood, the medication should be discussed with your prescriber immediately. Most people who take corticosteroids never develop psychosis, but awareness of the possibility matters because the fix is straightforward if it is caught.
Anabolic Steroids
Anabolic-androgenic steroids, the synthetic testosterone derivatives used for muscle building, are another exogenous hormone source linked to psychosis. People who misuse these drugs typically take doses far above what would be prescribed medically, sometimes 10 to 100 times the therapeutic range, and often stack multiple steroids at once. Significant psychiatric symptoms associated with anabolic steroid abuse include aggression, mania, and less frequently, psychosis and suicidal behavior.21PubMed. Behavioural manifestations of anabolic steroid use The risk appears to be dose-dependent, meaning it climbs with the amounts used and the number of compounds stacked.
Calcium, Parathyroid Hormone, and Psychosis
Parathyroid hormone regulates calcium levels in the blood, and when calcium climbs too high, the brain suffers. Hypercalcemia, most commonly caused by overactive parathyroid glands, is known to cause neuropsychiatric problems including mood changes, confusion, and, in rare cases, full-blown psychosis. High calcium is thought to damage neurons through a combination of excitotoxicity and disruption of dopamine and serotonin signaling.22PubMed Central. Prolonged Hypercalcemia-Induced Psychosis Case reports describe patients with primary hyperparathyroidism who were initially treated purely as psychiatric patients before someone checked their calcium level and found the real cause.23European Psychiatry. “This is not a doctors thing, it is witchcraft” – A case report of acute psychosis concomitant to primary hyperparathyroidism These cases resolve when the calcium abnormality is corrected, either through surgery or medical management of the parathyroid condition.
Prolactin and Pituitary Tumors
The pituitary gland sits at the crossroads of the hormone-psychosis relationship in a way that creates clinical dilemmas. Prolactinomas, benign pituitary tumors that overproduce prolactin, are treated with dopamine agonist drugs like bromocriptine and cabergoline. These medications work by activating dopamine receptors, which is exactly the opposite of what antipsychotic drugs do (antipsychotics block dopamine receptors). The predictable result is that dopamine agonists can sometimes trigger or worsen psychosis. Case reports describe patients with schizophrenia who experienced psychiatric decompensation soon after starting bromocriptine or cabergoline, even while still taking an antipsychotic.24PubMed Central. Management of Psychosis Associated With a Prolactinoma: Case Report and Review of the Literature For clinicians managing a patient who has both a prolactinoma and a psychotic disorder, the treatment of one condition can directly worsen the other.
There is also a broader connection between pituitary hormones and first-episode psychosis. A meta-analysis of blood hormone levels in people experiencing their first psychotic episode (who had never taken psychiatric medication) found that they had higher levels of ACTH and prolactin, and lower levels of TSH, compared to healthy controls.25Psychoneuroendocrinology. Blood concentrations of anterior pituitary hormones in drug-naïve people with first-episode psychosis: A systematic review and meta-analysis Whether these hormonal differences are a cause of the psychosis, a consequence of it, or a marker of the same underlying brain changes remains an open question.
Why Hormone-Driven Psychosis Gets Misdiagnosed
The core problem is that psychosis looks the same regardless of its cause. A person hearing voices because of hypercalcemia presents much the same way as a person hearing voices because of schizophrenia. The hallucinations are just as real to the patient, the paranoia just as intense, the disorganized thinking just as apparent. Nothing about the psychiatric presentation reliably signals “check the hormones.” A case series of endocrine-triggered psychiatric syndromes highlighted this diagnostic challenge across four different hormonal conditions: hyperthyroidism presenting as psychotic mania, hyperparathyroidism with calcium-induced psychosis, a pheochromocytoma mimicking panic disorder, and Addison’s disease presenting as psychotic depression.26Apollo Medicine. Hormones in the Mind: Four Faces of Endocrine-triggered Psychiatric Syndromes
Standard blood work for a first psychiatric presentation does not always include a full endocrine workup. Thyroid function tests (TSH and free T4) are commonly ordered, but calcium, cortisol, and parathyroid hormone levels are often checked only if there is a clinical suspicion. The unfortunate reality is that many patients with hormone-driven psychosis spend time in psychiatric units receiving antipsychotic medications that treat the symptoms without addressing the cause. In conditions like myxedema psychosis, where about half of patients had no prior thyroid diagnosis, the psychotic episode itself is the first clue that an endocrine problem exists.
Using Hormones to Treat Psychosis
The flip side of hormones causing psychosis is that hormonal interventions can sometimes help treat it. The strongest evidence in this area involves raloxifene, a drug that activates estrogen receptors in the brain. Multiple meta-analyses have found that adding raloxifene to standard antipsychotic treatment improves symptom scores in people with schizophrenia. One meta-analysis reported that raloxifene was better than placebo at reducing positive symptoms (like hallucinations and delusions), negative symptoms (like emotional withdrawal), and overall symptom severity.27npj Schizophrenia. The effect of raloxifene augmentation in men and women with a schizophrenia spectrum disorder: a systematic review and meta-analysis These benefits have been found in both men and women, which is consistent with the idea that estrogen-pathway signaling in the brain is relevant to psychosis regardless of sex.
A clinical trial specifically targeting women with treatment-resistant schizophrenia found that adding raloxifene led to a meaningful reduction in overall symptom scores and was roughly six times more likely to produce a clinical response compared to placebo.28PubMed. Effect of Adjunctive Raloxifene Therapy on Severity of Refractory Schizophrenia in Women: A Randomized Clinical Trial A more recent meta-analysis confirmed improvements in positive and general symptom scores with raloxifene as an add-on therapy.29PubMed Central. Raloxifene as an Adjuvant Therapy for Patients With Schizophrenia: An Up‐To‐Date Systematic Review and Meta‐Analysis Raloxifene is not approved specifically for psychosis treatment, but these findings suggest that manipulating hormone pathways could become a meaningful part of the therapeutic toolkit, particularly for patients who do not respond well to standard antipsychotics alone.
Neurosteroids are another area of active research. These are hormones produced directly in the brain (as opposed to in glands like the ovaries or adrenal cortex) that influence the same receptor systems involved in psychosis. Compounds like pregnenolone and dehydroepiandrosterone (DHEA) affect the GABA receptor system, which plays a central role in regulating brain excitability. Evidence suggests these neurosteroids may be involved in the development of schizophrenia, and they are being explored as potential therapeutic targets.30PubMed Central. Neurosteroids in Schizophrenia: Pathogenic and Therapeutic Implications
Gender-Affirming Hormones and Psychosis Risk
A question that comes up with increasing frequency is whether gender-affirming hormone therapy (estrogen or testosterone treatment for transgender individuals) affects psychosis risk. A large Dutch national cohort study found that transgender individuals overall had higher rates of non-affective psychotic disorders compared to the general population. However, the study’s design made it difficult to separate the effect of hormone therapy itself from the many other factors that differ between transgender and cisgender populations, including minority stress, social adversity, and pre-existing mental health conditions. The increased psychosis risk was significantly higher among transgender individuals identified through psychiatric care pathways than among those identified solely through gender-affirming care pathways, which hints that pre-existing vulnerability plays a substantial role.31PubMed Central. The risk of psychosis for transgender individuals: a Dutch national cohort study The current evidence does not support the claim that gender-affirming hormones directly cause psychosis, but it does suggest that transgender individuals as a population face elevated psychosis risk for reasons that likely go beyond hormones alone.
For someone who already has a psychotic disorder and is considering or currently using gender-affirming hormones, close psychiatric monitoring during hormone transitions makes sense, just as it would during any other period of hormonal change. The estrogen protection hypothesis would predict that starting estrogen therapy could be stabilizing, while stopping it could be destabilizing, but real-world clinical data specifically testing this in transgender populations remain thin.