Study Notes on Mood Disorders and Treatments

Water and Milk Analogy

  • Initial thoughts on drinking water and milk growing up.
    • Surprised at the water's taste.
    • Developed a preference for milk due to its strength.

Definitions and Concepts Related to Depression

  • Anurgia:
    • Definition: Lack of energy and active daily routines.
    • Associated with major depressive disorder (MDD).

Understanding Mood Responses

  • Normal emotional responses: Sadness and mood fluctuations are part of the human experience.
  • Distinction between normal mood response and clinical depression:
    • Clinical diagnosis occurs when mood disturbances impair functioning.
  • Criteria for diagnosing major depressive disorder (MDD):
    • Has to last at least two weeks with depressive symptoms.

Types of Mood Disorders

  • Bipolar Disorder:
    • Two types: Bipolar I and Bipolar II.
    • Involves mood swings between mania and depression.

Features of Mania

  • Maniacal period characteristics:
    • Abnormally elevated, expansive, or irritable mood lasting at least one week.
    • Possible presence of psychosis (hallucinations, delusions).
  • Hypomania:
    • Milder form of mania with less intensity.

Persistent and Disruptive Mood Disorders

  • Persistent Depressive Disorder (Dysthymia):
    • Chronic state of depression without episodic relief.
  • Disruptive Mood Dysregulation Disorder (DMDD):
    • Diagnosed mainly in children under ten years.
    • Characterized by persistent anger, irritability, and outbursts in different settings (school, home).

Environmental Factors

  • Influence of seasonal changes on mood:
    • Winter Depression: Begins in fall and resolves in spring.
    • Spring/Summer Depression: Begins in spring and is more prevalent in summer.

Treatment Approaches

  • Light Therapy:
    • Use of specific light wavelengths to simulate sunlight, often integrated into morning routines.
    • Some evidence of effectiveness, with considerations for the type/quality of light used.
  • Medications:
    • Wellbutrin: Only FDA-approved medication for treating seasonal affective disorder (SAD).

Postpartum Mental Health

  • Postpartum Depression:
    • Common among new mothers; often linked with anxiety and intrusive thoughts about baby care.
  • Postpartum Psychosis:
    • A severe emergency condition with quick onset of psychotic symptoms, including hallucinations and suicidal ideation regarding the newborn.
  • Case example mentioned related to significant postpartum psychosis leading to tragic outcomes (strangling and child murder).

Other Mental Health Disorders

  • Premenstrual Dysphoric Disorder (PMDD):
    • Severe form of PMS affecting 5-8% of premenopausal individuals, significantly impairing daily functioning.

Self-Injury and Coping Mechanisms

  • Non-Suicidal Self-Injury:
    • Definition: Intentional harm without suicidal intent (cutting, head banging, etc.).
    • Reasons for self-harm include:
    • Physical pain feels more manageable than emotional pain.
    • Self-punishment or attention-seeking behaviors.

Underlying Theories and Influences of Mood Disorders

  • Genetics play a significant role in mood disorders:
    • Increased risk of Major Depression if there is a family history (2-3 times more likely).
    • Twin studies suggest a heritability rate of 40-50%.
  • Psychosocial stressors can trigger mood episodes, emphasizing the importance of combined medication and therapy.

Neurochemical Influences on Mood Disorders

  • Neurotransmitter levels:
    • Depression: Typically a deficiency in serotonin, norepinephrine, and dopamine.
    • Mania: Elevated norepinephrine and serotonin levels adversely affect mood balance.

Hormonal and Physiological Influences

  • Hormonal imbalances and endocrine disorders can contribute to mood disturbances:
    • Increased cortisol levels are linked to stress response and depression.
    • Rapid hormonal alterations post-birth, predominantly drops in estrogen and progesterone affects mood.

Assessment and Diagnosis of Major Depressive Disorder

  • Diagnostic Criteria for MDD (DSM):
    • At least five of the following symptoms must be present for at least two weeks:
    • Depressed mood or loss of interest or pleasure (required).
    • Additional symptoms include weight change, sleep disturbances, fatigue, etc.
  • Notable statistics on gender (twice as common in females) and familial predisposition (1.5 to 3 times greater risk from first-degree relatives).
  • Mean onset typically occurs around age 40.

Long-Term Prognosis and Treatment Considerations

  • Untreated depression can last months to years.
    • Some may experience a single episode, while others can have recurrent episodes.
    • Treatment often includes six months of medication post-initial episode.

Treatment Approaches in Psychiatry

  • Categories of antidepressants include:
    • SSRIs (Selective Serotonin Reuptake Inhibitors).
    • SNRIs (Serotonin-Norepinephrine Reuptake Inhibitors).
    • Atypical antidepressants.
  • Utilizing medication alongside therapy improves outcomes, especially for practitioners aiming to stabilize mood.
  • Electroconvulsive Therapy (ECT):
    • Considered in severe cases, inducing seizures under anesthesia to alleviate severe depression.
  • Transcranial Magnetic Stimulation (TMS) and Vagal Nerve Stimulation are advanced brain stimulation therapies with varying degrees of demand on the patient.

Considerations for Bipolar Disorder

  • Bipolar I Disorder: Involves full manic episodes and depressive episodes.
  • Bipolar II Disorder: Characterized by at least one episode of hypomania and significant depressive episodes.
    • Key distinctions regarding episode characteristics, severity, and treatment implications.
  • Medication education is crucial for managing mania and related depressions post-treatment initiation.