IMR Press / JIN / Volume 20 / Issue 3 / DOI: 10.31083/j.jin2003081
Open Access Commentary
Comparing underlying mechanisms of depression in multiple sclerosis and rheumatoid arthritis
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1 Neuropsychology and Behavioral Neurology Unit, Faculty of Psychology and Transfacultary Platform Psychiatry and Psychology, University of Basel, 4055 Basel, Switzerland
J. Integr. Neurosci. 2021, 20(3), 765–776; https://doi.org/10.31083/j.jin2003081
Submitted: 18 May 2021 | Revised: 20 July 2021 | Accepted: 31 August 2021 | Published: 30 September 2021
Abstract

Multiple Sclerosis (MS) and Rheumatoid Arthritis (RA) are common, chronic, autoimmune diseases affecting many people worldwide. While clinically very different in their phenotype, both diseases are thought to have an autoimmune-mediated origin. MS and RA share genetic similarities, and in both diseases, antibodies against host antigens can be found. Aside from the well-known somatic symptoms, many RA patients also show signs and symptoms of psychiatric illnesses, of which depression is the most common diagnosis. In this commentary, both diseases will be introduced and briefly characterized individually and then compared. Depression will be introduced as one of the most frequent psychiatric diseases in the general population. This paper focuses on presenting the possible causes, including psychosocial factors, genetics, and immunologic mechanisms. Hypotheses aimed to explain the higher incidence of depression in these two seemingly different autoimmune diseases will be discussed.

Keywords
Autoimmune diseases
Depression
Multiple sclerosis
Rheumatoid arthritis
Pathophysiology
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