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Mania and Antimanic Drugs: Overview01:24

Mania and Antimanic Drugs: Overview

Mania, a psychological condition characterized by elevated mood, increased energy, and reduced sleep need, is part of the bipolar disorder cycle. The exact cause of mania isn't entirely known, but it is thought to be a combination of genetic, environmental, and neurological factors. Bipolar disorder involves alternating manic and depressive episodes. Mood stabilizers like lithium, antipsychotics, and anticonvulsants help manage these episodes. Lithium carbonate is particularly effective as a...
Antidepressant Drugs: MAOIs and Other Agents01:23

Antidepressant Drugs: MAOIs and Other Agents

Atypical antidepressants, including bupropion (Wellbutrin), mirtazapine (Remeron), nefazodone (Serzone), trazodone (Desyrel), and vilazodone (Viibryd), offer unique mechanisms of action. Bupropion weakly inhibits dopamine and norepinephrine reuptake, aiding depression treatment and smoking cessation, with a low risk of sexual dysfunction. Mirtazapine enhances serotonin and norepinephrine neurotransmission, leading to sedation, increased appetite, and weight gain. As a result, it helps treat...
Depressive Disorders: MDD and Dysthymia01:27

Depressive Disorders: MDD and Dysthymia

Depressive disorders are a group of mental health conditions characterized by pervasive feelings of sadness, diminished pleasure in life, and a significant impact on daily functioning. These conditions are most prevalent in individuals during their 30s and affect women at twice the rate of men. Contrary to popular belief, younger individuals are generally more susceptible to these disorders than older adults. Two key types of depressive disorders include Major Depressive Disorder (MDD) and...
Bipolar Disorder01:30

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Drug Therapy01:28

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Related Experiment Video

Updated: Jul 3, 2026

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
04:33

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder

Published on: April 26, 2024

Mixed Symptoms in Mood Disorders: A Historical, Clinical, and Therapeutic Review

Gustavo Vázquez1, Verónica Grasso2, Micaela Dines3

  • 1Department of Psychiatry, School of Medicine and Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada. International Consortium for Mood & Psychotic Disorder Research, McLean Hospital, Belmont, MA, EE. UU. . g.vazquez@queensu.ca.

Vertex (Buenos Aires, Argentina)
|January 13, 2026
PubMed
Summary
This summary is machine-generated.

Mixed features in mood disorders, combining manic and depressive symptoms, are common and linked to severe outcomes. Recent research highlights second-generation antipsychotics as effective treatments, unlike older medications or antidepressants.

Keywords:
mixed symptomsmood disordersdepressionbipolar disorderpharmacological treatment

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Area of Science:

  • Psychiatry and Mental Health
  • Mood Disorders Research
  • Pharmacological Treatments

Background:

  • Mixed features, blending manic/hypomanic and depressive symptoms, are a core aspect of mood disorders.
  • Diagnostic criteria have evolved from restrictive to dimensional approaches, with DSM-5 introducing a 'mixed features' specifier, though limitations remain.
  • Recent systematic reviews indicate mixed features are prevalent, affecting 18-35% of major depressive, bipolar depressive, and manic/hypomanic episodes.

Purpose of the Study:

  • To review the historical context, epidemiological findings, and recent therapeutic evidence for mixed features in mood disorders.
  • To highlight the clinical significance and challenges associated with diagnosing and treating mixed features.
  • To underscore the need for improved diagnostic consensus and long-term controlled trials.

Main Methods:

  • Systematic review of historical diagnostic formulations and current literature on mixed features.
  • Analysis of epidemiological data on prevalence across different mood episode types.
  • Evaluation of pharmacological evidence, focusing on recent trials of second-generation antipsychotics and other treatments.

Main Results:

  • Mixed features are associated with increased suicide risk, poorer prognosis, and reduced treatment response.
  • Second-generation antipsychotics (lumateperone, lurasidone, ziprasidone, cariprazine, olanzapine/fluoxetine) show the most robust evidence for treating mixed features.
  • Established mood stabilizers (lithium, valproate, lamotrigine) lack specific studies for mixed depressive episodes, and antidepressant monotherapy is insufficiently supported.

Conclusions:

  • Current diagnostic criteria for mixed features require refinement for greater sensitivity.
  • There is a critical need for more long-term, controlled clinical trials to guide treatment strategies for mixed features.
  • Optimizing the diagnosis and treatment of mixed features is essential for improving patient outcomes in mood disorders.