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Major Depressive Disorder Treatment: An Overview of Current Approaches

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Major Depressive Disorder Treatment: An Overview of Current Approaches

Psychotherapy

Psychotherapy, also known as talk therapy, is a common treatment for major depressive disorder. There are several types of psychotherapy that can be used, either alone or in conjunction with antidepressant medication.


Cognitive Behavioral Therapy


Cognitive behavioral therapy (CBT) is one of the most effective types of psychotherapy for depression. CBT helps patients replace negative or irrational thoughts with more positive and rational ones. During CBT sessions, a therapist will help patients identify thought patterns that contribute to depressed moods and work to change them. Some examples of cognitive techniques used in CBT include thought records, challenging negative automatic thoughts, and cognitive restructuring.


Behavioral techniques used in CBT for depression aim to help patients engage in activities and behaviors that improve mood, such as socializing with friends or exercising. A therapist may assign behavioral "homework" to patients to help them practice new skills outside of sessions. Studies have shown that CBT can be as effective as antidepressant Global Major Depressive Disorder (MDD) Treatment for many patients experiencing mild to moderate depression.


Interpersonal Therapy

Interpersonal therapy (IPT) focuses on relationships and social aspects of a patient's life that may be exacerbating depression. In IPT sessions, a therapist and patient explore relationship issues, grief, role transitions, and interpersonal disputes that could be contributing to depressed mood. The goal is to improve communication and problem-solving skills within the patient's close relationships. IPT has been shown to reduce depressive symptoms when used alone or combined with antidepressant medication.


Psychodynamic Psychotherapy

Psychodynamic psychotherapy takes a deeper look at a patient's psychological development, past experiences, interpersonal patterns, and underlying unconscious conflicts that could be fueling depression. In open-ended talk therapy sessions, patients are guided to gain insight into themselves and their depression. Therapists may also interpret themes, patterns, or symbolic meanings behind thoughts and dreams. While psychodynamic therapy requires a longer term commitment, studies have found it can significantly reduce symptoms of depression when used as a standalone or adjunct treatment.


Group Therapy

Group therapy provides the added benefit of social support from others experiencing depression. Patients can gain perspective by hearing others' experiences, give and receive feedback, and learn coping strategies from peers. Different types of group therapies for depression include CBT, IPT, psychodynamic, and psychoeducation groups. Sharing one's story and helping others can help boost self-esteem for those struggling with depression.


Antidepressant Medication

When depression is moderate to severe, or when a patient has not responded fully to psychotherapy alone, antidepressant medication is usually recommended. The following are some commonly prescribed classes of antidepressant medications:


Selective Serotonin Reuptake Inhibitors (SSRIs)

SSRIs are currently the most frequently prescribed class of antidepressants. Common SSRIs include fluoxetine (Prozac), sertraline (Zoloft), paroxetine (Paxil), escitalopram (Lexapro), and citalopram (Celexa). SSRIs work by increasing levels of the neurotransmitter serotonin in the brain. They are generally well-tolerated, though side effects like nausea, headaches, sexual dysfunction or weight changes can occur initially.


Serotonin-Norepinephrine Reuptake Inhibitors (SNRIs)

SNRIs like duloxetine (Cymbalta) and venlafaxine (Effexor) increase levels of serotonin and norepinephrine. They are as effective as SSRIs for most patients and have similar side effects. Some advantages of SNRIs over SSRIs are they may provide relief for additional problems like chronic pain or anxiety disorders that often accompany depression.


Atypical Antidepressants

This class includes bupropion (Wellbutrin), mirtazapine (Remeron), and vortioxetine (Trintellix). While they work through different mechanisms than SSRIs/SNRIs, atypical antidepressants have shown effectiveness against major depression. They also tend to cause fewer sexual side effects or weight gain issues. Mirtazapine especially helps improve sleep, appetite and weight gain in some depressed patients.


Tricyclic Antidepressants (TCAs)

Older TCA medications such as amitriptyline, nortriptyline, and imipramine are not used as often now due to their side effect profile and safety in overdose. However, they can be good alternatives for some patients unresponsive to newer antidepressants.


Monoamine Oxidase Inhibitors (MAOIs)

MAOIs like phenelzine (Nardil) and tranylcypromine (Parnate) work by inhibiting the breakdown of key neurotransmitters like serotonin, norepinephrine and dopamine. They are rarely used now as a first option due to dietary and drug interaction risks when taking MAOIs. However, they provide relief for some treatment-resistant depression sufferers.


Augmentation and Combination Strategies

For approximately one-third of depression patients who do not experience remission of symptoms with a first antidepressant trial alone, augmentation or combination strategies may be considered. This involves adding a second medication (such as an atypical antipsychotic agent like aripiprazole), supplement (such as omega-3 fatty acids or S-adenosylmethionine), thyroid hormone, sleep aid, etc. to boost the effects of the primary antidepressant. Combining different classes of antidepressants is another option, as is switching to a new solo medication. Augmentation allows lower, safer doses of each component to be used.


Electroconvulsive Therapy

Electroconvulsive therapy (ECT) involves inducing brief, controlled seizures in patients under anesthesia for its antidepressant effects. As a last-resort treatment for severe or life-threatening depression that is treatment-resistant, ECT has been shown to rapidly reduce symptoms in 50-70% of cases. Potential side effects include short-term memory issues, but patient quality of life improves significantly post-ECT for most. It is not a first-line treatment due to its risks but provides hope for many facing chronic, disabling forms of depression.

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