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Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_2745_Библиотеки_им_академика_М_И_Перельмана

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When depression and fatigue are both present, interventions that are empirically supported for both conditions should be considered. Pharmacological and behavioral interventions can be effective for groups of people with MS. For example, stimulants and wakefulness-promoting medications commonly used to treat similar conditions such as chronic fatigue syndrome, attention-deficit/hyperactivity disorder (ADHD), narcolepsy, etc. are also commonly used to treat MS-related fatigue.
37
Behavioral interventions such as energy
conservation can make a significant impact on a person’s quality of life. 38 Most promising, a number of studies found that psychological interventions, such as CBT, are effective for treating MS-related fatigue symptoms, again suggesting a common etiology. 39 ,
40
Depression: A Risk Factor for Suicide
A potential consequence of untreated depression is suicide. There are a number of reviews examining rates of suicidal ideation, suicide attempts, and successful suicides in persons with MS. While the rates vary by method of inquiry, the consensus is that death due to suicide is significantly elevated in persons with MS (up to three times higher than in the general population). 41 , 42 As with the general population, suicide attempts are more common in females with MS, but more likely to be fatal in males with MS. 43 Suicidal ideation is even more common; one study found that up to 22% of persons with MS endorse suicidal thoughts at any one time and 29% endorsed transient suicidal thoughts over the course of 6 months. Ideation was associated with
depression age (both younger and older) inability to drive lower income single relationship status alcohol use
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bowel and bladder dysfunction swallowing difficulties speech impairment progressive disease subtype higher level of physical disability earlier disease course 41 ,
44
It is important to note that depression was the only predictor of persistent suicidal ideation. 41 , 45 ,
46
There have been concerns that suicide, suicide attempts, and/or suicidal ideation could be linked to disease-modifying therapies, particularly interferon β. In the first relapsing­remitting MS interferon β-1b trial, there was one suicide and several unsuccessful suicide attempts in the treatment arms, but none in the placebo group. However, subsequent research has not demonstrated a connection between disease-modifying agents and suicide. Secondary analyses of the original trial suggest that premorbid mood symptoms and family history of mood disturbance were not adequately controlled a priori. Therefore, depression and depressive symptoms are not thought to be a contraindication to interferon β treatment. 47 -
49
Anxiety
Anxiety disorders are found in approximately 14% to 45% of individuals living with MS. 30 , 50 Although detrimental to quality of life, anxiety remains substantially underresearched when compared with depression in individuals with MS.
51
Anxiety—specifically its most common clinical variant, generalized anxiety disorder (GAD)—is characterized by excessive and persistent worry. GAD is associated with an increase in confirmed MS exacerbations, pseudoexacerbations, overutilization of health care services, poor treatment adherence, and increased risk of suicide.
52
Approximately half of depressed individuals with MS also experience anxiety. 9 Therefore, it is recommended that standardized anxiety assessments are used in MS patients with
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known depression. The 7-item Generalized Anxiety Disorder Scale (GAD-7) and the Hospital Anxiety and Depression Scale (HADS) are two validated measures for persons with MS. 16
,
52
The HADS measures both anxiety and depression
simultaneously and may therefore be an efficient measure in persons with suspected comorbidity.
At present, there are few evidence-based treatments for MS­related anxiety. Intervention studies of mindfulness-based stress reduction, biofeedback, relaxation training, and an internet-delivered behavioral intervention found indirect effects on anxiety. 53 Further research is needed to support and develop behavioral and pharmacologic interventions for anxiety among those with MS.
Bipolar Disorder
Bipolar disorder is a serious chronic mood disorder characterized by repeated episodes of depressed mood, mania, hypomania, or a mixture of these states. Bipolar disorder is associated with reduced quality of life, unemployment, higher medical utilization, and increased risk of suicide. In the general population, symptom onset typically occurs in the late teenage years, between the ages of 15 and 19 years. General prevalence of bipolar I disorder, the variant involving manic episodes, is up to 2%, while the prevalence of bipolar II disorder, involving hypomanic episodes, has been reported as high as 4%. Generally, bipolar disorder is thought to be twice as common in MS. However, rates varied considerably, from 0% to 16%, depending on methods of data collection. Not unlike MS itself, female gender seems to carry a higher risk of bipolar disorder, existing in approximately 5% of women, compared with 3.9% of men.
42
As might be expected, bipolar disorder has a significant impact on quality of life and mental health. Compared with depression, bipolar disorder has a significantly greater impact on quality of life, as well as an increased risk of suicide. Up to 50% of individuals with bipolar disorder report at least one suicide attempt, and one-fifth die by suicide. 54 ,
55
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Population-based data from Sweden examined possible causes of the increased prevalence of bipolar disorder in MS, including genetic and biological factors and history of emotional trauma. Temporal data ruled out the development of bipolar disorder due to trauma. Familial studies of siblings ruled out the increased risk due to genetics. Therefore, it was hypothesized that a biological and possibly inflammatory mechanism was responsible for the presence of bipolar disorder in persons with MS.
56
If bipolar disorder is suspected, the Mood Disorders Questionnaire has been used successfully in persons with MS.
54 , 57
However, it should be noted that the instrument is prone
to high false-positive rates. Therefore, if used, it should prompt a more in-depth assessment by a mental health provider rather than a documented diagnosis of bipolar disorder.
There are no known clinical trials or treatment trials of pharmacologic or behavioral interventions for bipolar disorder in multiple sclerosis. However, available case studies provide a possible starting point for treatment options. Consistent with the inflammatory theory, a female patient was admitted for manic episode with psychotic features and found to have three new T2 gadolinium-enhancing lesions on magnetic resonance imaging (MRI). She was successfully treated with intravenous methylprednisolone and risperidone.
58
Pseudobulbar Affective Disorder
The estimated prevalence rates of pseudobulbar affect (PBA) in persons with MS range from 7% to 46%. 2 , 9 , 59 , 60 PBA is characterized by affective disinhibition with labile, excessive, and uncontrollable emotional expression. There is often rapid shifting from laughing to crying in a relatively short period of time. In addition to sudden laughter and crying, the majority of individuals with PBA also experience labile anger/frustration.
59
The condition can impact multiple aspects of an individual’s
psychosocial functioning, including interpersonal relationships, depressive symptoms, self-esteem, and overall
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psychological health, and can also lead to increased disability.
59 , 61
The American Neuropsychiatric Association Committee on Research identified lesions in the frontal lobe, cerebral hemispheres, diencephalon, brainstem, and cerebellum to be involved in PBA symptoms. 62 When PBA is suspected, measures such as the Pathological Laughing and Crying Scale (PLACS) and the Center for Neurologic Study-Lability Scale (CNS-LS) are among the most commonly used instruments. 12
,
63 , 64
The PLACS is an interviewer-rated instrument that
assesses severity of PBA symptoms and has been successfully used in MS. 25 , 29 , 65 The CNS-LS is the first self-reported measure developed to assess pathological laughing and crying (PLC), and it has also been validated in patients with MS. 65 ,
66
A combination of dextromethorphan and quinidine (Nuedexta) is approved by the U.S. Food and Drug Administration (FDA) for treatment of PBA. 6 However, additional medications such as SSRIs (e.g., fluoxetine, citalopram, sertraline, paroxetine), tricyclics (amitriptyline, nortriptyline), and valproic acid (Depakote) may also be effective for PBA symptoms in persons with MS. 60 , 61 As described above in relation to depression, potential side effects and drug interactions should be considered before initiating and during maintenance of treatment.
Conclusions
Mood disorders impact individuals living with MS at higher rates than those in the general population, and can emerge both as a psychological response to the difficulties of living with MS and as the direct product of inflammation and physiological disruption of CNS function. However, there are relatively few comprehensive MS-specific treatment guidelines for affective disorders compared with what exists in the general population and many other chronic disease populations. Further research is needed to inform optimal first­line treatments and to develop additional therapy regimens better targeted to the complex, multifactorial psychiatric presentation of the MS patient.
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Untreated mood disorders have serious implications for patients’ ability to function and their overall quality of life. Many short-form self-report inventories are available for screening and monitoring of mood symptoms, which is essential for identifying patients in need of psychiatric and other mental health services. Current best evidence supports a handful of behavioral and pharmacological interventions for mood disorders in MS, including cognitive behavioral therapy and SSRIs and SNRIs with longer half-lives.
Take Away Points
Mood symptoms can substantially lower the quality of life in individuals with MS.
Education on mood symptoms in MS is crucial for clinicians, patients, and their families to be able to recognize symptoms of depression, anxiety, and other common mood symptoms.
Suicidal ideation is up to three times more common in the MS population compared with the general population. The following factors are associated with greater suicide risk: depression, young or old age, inability to drive, lower income, alcohol use, progressive disease subtype, and higher level of physical disability.
Brief mood symptom screening assessment is highly recommended to identify and track symptoms, particularly given that depressive symptoms can be more prevalent during an exacerbation.
Effective interventions for mood symptoms should include both behavioral and pharmaceutical options.
Case Study
A 34-year-old, engaged, college-educated, full-time
employed female, diagnosed with relapsing-remitting
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MS 1.5 years prior, who presented to clinic for follow-
up with her neurologist.
MS symptoms included difficulty walking long
distances (although she ambulates without assistance),
mild dysesthesia in both feet, mild cognitive
impairment, and fatigue.
Patient also reported a history of episodic depression
preceding her MS diagnosis by 2 years; she had been
prescribed low-dose bupropion by her primary care
physician, which was well-tolerated and of benefit to
her mood.
Other medications included fingolimod and
dalfampridine.
Patient was observed crying in the clinic and referred
for psychological evaluation, which revealed worsening
depression for 3 months.
Patient met criteria for current major depressive
episode with fleeting suicidal ideation.
She previously had no history of alcohol use but
reported that she had recently started drinking alcohol
daily to cope with depression; she also reported poor
adherence to disease-modifying therapy over the prior
3 months.
Although the patient had no history of seizures, recent
onset of alcohol abuse rendered her at greater risk of
seizures in the context of MS and treatment with
dalfampridine and bupropion.
Patient was switched from bupropion to 50 mg
sertraline, titrated up over 6 weeks to 200 mg.
She was referred for cognitive behavioral
psychotherapy (CBT) twice per week with a health
psychologist experienced in MS.
Psychotherapy initially targeted depression and alcohol
abuse, as well as improvement of adherence to
fingolimod; other issues addressed included the
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patient’s concerns that her fiancé would leave her due
to her MS.
Her fiancé attended several sessions with her and
reassured the patient that he was committed to their
relationship and plans for marriage.
Within 5 months of beginning CBT, her major
depressive episode was largely in remission.
She continued psychotherapy to target residual mood
symptoms, adapt to her MS diagnosis and
accompanying physical disability, and learn healthier
ways of coping with stress and was successfully
maintained on 200 mg sertraline.
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