Titrating the Mind: Refractory Schizophreniform Psychosis as an Isolated “Cerebral Storm” in Graves’ Disease
https://doi.org/10.15605/jafes.041.S1
- Author:
Fang Chan Lim
1
Author Information
1. Department of Internal Medicine, Hospital Tawau
- Publication Type:Journal Article
- MeSH:
Graves Disease;
Psychotic Disorders
- From:
Journal of the ASEAN Federation of Endocrine Societies
2026;41(S1):120-121
- CountryPhilippines
- Language:English
-
Abstract:
Introduction:Neuropsychiatric manifestations of thyrotoxicosis range
from mild anxiety to severe psychosis. While the BurchWartofsky Point Scale (BWPS) reliably identifies systemic
thyroid storms, an isolated “cerebral storm”—where
profound thyrotoxic encephalopathy presents without
peripheral autonomic signs—remains a diagnostic
challenge. This case highlights the neuromodulatory
pathogenesis of thyrotoxic psychosis and the critical role
of biochemical control for psychiatric resolution.
Case:A 31-year-old male with Graves’ disease and poor
medication adherence presented with a 2-week history of
aggressive behavior and auditory hallucinations. Initial
investigations revealed overt thyrotoxicosis (thyroidstimulating hormone <0.01 mIU/L; free thyroxine 4 (FT4)
59.53 pmol/L) and an unremarkable computed tomography
brain. Despite his severe neuropsychiatric decompensation,
a BWPS of 20 precluded a clinical diagnosis of systemic
thyroid storm.
His symptoms remained refractory to aggressive
psychotropic polypharmacy, including haloperidol,
olanzapine, lithium, and diazepam. Management was
therefore focused on the underlying thyrotoxicosis with
an optimized antithyroid regimen of carbimazole and
propranolol. Clinical resolution of psychotic symptoms
was achieved only after FT4 declined significantly to 20.46
pmol/L, allowing the successful tapering of all psychiatric
medications. He was discharged in a stable, clinically
euthyroid state with integrated medical and psychiatric
follow-up.
Conclusion:The failure of standard antipsychotics suggests that
thyrotoxic psychosis is driven by distinct neuromodulatory
mechanisms rather than primary dopaminergic dysfunction.
The chronic thyrotoxic state secondary to prolonged
treatment non-adherence likely upregulates and sensitizes
dopamine receptors while simultaneously suppressing
inhibitory GABAergic pathways. This neurochemical
imbalance lowers the neurological threshold, precipitating
an isolated cerebral storm. This case illustrates the limitations
of the BWPS in purely neuropsychiatric presentations and
reinforces that restoring euthyroidism is the definitive
treatment for thyrotoxic psychosis.
- Full text:2026080509594324110EP_A181.pdf
