Resolution of Suicidal Ideation With Corticosteroids in a Patient With Concurrent Addison's Disease and Depression

Resolution of Suicidal Ideation With Corticosteroids in a Patient With Concurrent Addison’s Disease and Depression

To the Editor: Neuropsychiatric disturbances in Addison’s disease are often reported,1-11 but rarely recognized in clinical practice.9 Neuropsychiatric manifestations may often be the initial or sole presenting symptom in many cases of Addison’s disease.4-8,10,11 We report a case of concurrent severe depression and Addison’s disease in which depressive symptoms resolved after a single administration of high-dose corticosteroids.

Case report. Ms A, a 70-year-old woman with atrial fibrillation, hypertension, diabetes mellitus type II, depression, and adrenal hyperplasia status post-bilateral adrenalectomies, developed postoperative Addison’s disease requiring maintenance corticosteroids and presented with several months of generalized weakness, failure to thrive, and poor oral intake. Her symptoms were attributed to inadequate treatment of adrenal insufficiency. In addition, she reported worsening depression in the months preceding her hospital admission, with symptoms of helplessness, poor appetite, psychomotor retardation, hypersomnia, and poor concentration, as well as suicidal ideation. The psychiatry consult-liaison service evaluated Ms A and diagnosed her with depression per DSM-IV criteria; they planned to initiate venlafaxine. Prior to administration of the venlafaxine, Ms A received a single dose of dexamethasone 8 mg intravenous and hydrocortisone 20 mg intravenous, which led to rapid improvement in her depression. She reported remission of her depression with management of the adrenal insufficiency. Consequently, venlafaxine was not initiated.

Addison’s disease is characterized by adrenal insufficiency due to reduced secretion of glucocorticoid by the adrenal glands.9,12 Patients often present with chronic progressive fatigue, generalized weakness, loss of appetite, weight loss, and hypotension. The link between neuropsychiatric disturbance and Addison’s disease has been well-reported in the literature,1-11 including by Thomas Addison in 1855, who described "attacks of giddiness, anxiety in the face, and delirium" as characteristics of the disease.9 The prevalence of neuropsychiatric symptoms in Addison’s disease is estimated to be between 64% and 84%,9 and in many cases, neuropsychiatric symptoms may be the initial or sole manifestation.4-8,10,11

Multiple theories exist to explain how hypoadrenocorticism may precipitate neuropsychiatric disturbance.1,3,9,13-15 Adrenal insufficiency causes electrolyte and metabolic abnormalities,9,15 including hyponatremia, which may lead to cerebral edema with encephalopathy.15 Adrenal insufficiency may also alter the electrical circuitry of the brain, as evidenced by electroencephalographic changes of diffuse slowing or bursts of activity with no cortical focus seen.9 Finally, cortisol binds to receptors in the hippocampus that promote cognition, memory, and enhanced mood. Thus, lack of cortisol can lead to symptoms of depression.16 The role of cortisol has been further supported by the finding of relative corticosteroid resistance in depressed patients.14

To the authors’ knowledge, this is the first report of corticosteroids acutely improving depression in the setting of Addison’s disease. Previous case reports have described concurrent use of electroconvulsive therapy and corticosteroids to treat Addison’s disease; however, there are no reports of corticosteroids alone as a possible treatment modality.17,18

Although the case suggests that corticosteroids may be of some benefit in treating depression with suicidal thoughts in the setting of adrenal insufficiency, the exact role remains unclear, especially for long-term treatment, warranting further investigation.

References

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18. Heijnen WT, Pluijms EM, Birkenhager TK. Refractory major depression successfully treated with electroconvulsive therapy in a patient with Addison’s disease. J ECT. 2013;29(2):137-138. PubMed doi:10.1097/YCT.0b013e3182756695

Shinjini Kundu, MS

Jodie Bryk, MD

Abdulkader Alam, MD

[email protected]

Author affiliations: School of Medicine, University of Pittsburgh (all authors); Department of Biomedical Engineering, Carnegie Mellon University (Ms Kundu); Departments of General Internal Medicine (Dr Bryk) and Psychiatry (Dr Alam), University of Pittsburgh Medical Center; and Western Psychiatric Institute and Clinic (Dr Alam), Pittsburgh, Pennsylvania.

Potential conflicts of interest: None reported.

Funding/support: None reported.

Published online: December 25, 2014.

Prim Care Companion CNS Disord 2014;16(6):doi:10.4088/PCC.13l01578

© Copyright 2014 Physicians Postgraduate Press, Inc.