Pathophysiological mechanisms of post-myocardial infarction depression: a narrative review.

Myocardial infarction (MI) can have significant physical and mental consequences. Depression is a prevalent psychiatric condition after MI which can reduce the quality of life and increase the mortality rates of patients. However, the connection between MI and depression has remained under-appreciated. This review examines the potential connection between depression and MI by overviewing the possible pathophysiologic mechanisms including dysregulation of the hypothalamic-pituitary-adrenal axis and autonomic nervous system, coagulation system dysfunction, inflammation, environmental factors, as well as, genetic factors. Furthermore, depression can be an adverse event of medications used for MI treatment including beta-blockers, statins, or anti-platelet agents. The need for early detection and management of depression in patients with MI is, therefore, crucial for improving their overall prognosis. Adherence to treatments and regular follow-up visits can ensure the best response to treatment.

Treatment Modalities for Chronic Pain in Elderly Patients With Depression: A Systematic Review.

Objective: To review the best pharmacologic and nonpharmacologic interventions in the management of chronic pain in elderly patients with depression.Data Sources: A systematic review of the literature was performed following the PRISMA guidelines and using PubMed. Articles published from 2010 to 2020 were included in the search. Search terms included (major depressive disorder OR MDD OR unipolar depression) AND (chronic pain) AND (elderly).Study Selection: The PubMed search identified 540 articles. All studies were in English and included reports about pain and depression in elderly individuals aged ≥ 65 years.Data Extraction: Articles were reviewed in 2 phases: abstract review followed by full-text review.Results: Abstracts were reviewed for relevance, and a total of 37 articles were identified for full-text review. In this phase, articles not meeting the elderly age criteria (≥ 65 years) or not discussing any treatment modalities were excluded. Nine papers were included after full-text review. The results showed co-occurrence of chronic pain and depression in 13% of the elderly population. Common pain symptoms were related to cancer, back pain, and arthritis.Conclusions: The findings emphasize the importance of individualized assessment of chronic pain in elderly patients with mood disorders such as depression. Since chronic pain and depression are independent risk factors for suicide, it is crucial to complete a thorough history and physical examination and to apply relevant screening tools for both depression and pain.

Voltage-gated potassium channel limbic encephalitis presenting as functional cognitive impairment.

Limbic encephalitis is often reported to present as seizures and impaired cognition with little focus on psychiatric presentations. In this case report, we present a 49-year-old man who initially presented to the Psychiatric Liaison Service with a several month history of confusion with the additional emergence of visual hallucinations and delusions. Due to the inconsistent nature of the symptoms in the context of a major financial stressor, a provisional functional cognitive impairment diagnosis was made. Investigations later revealed a positive titre of voltage-gated potassium channel (VGKC) antibodies, subtype leucine-rich glioma inactivated 1 accounting for his symptoms which dramatically resolved with steroids and immunoglobulins. This case highlighted the need for maintaining broad differential diagnoses in a patient presenting with unusual psychiatric symptoms.