A client asks a nurse about the differences between major depressive disorder (MDD) and dysthymia. Which of the following responses by the nurse is accurate?
"MDD is less severe than dysthymia but lasts for at least 2 years.".
"Dysthymia is characterized by alternating episodes of mania and depression.".
"Unlike MDD, dysthymia does not impair social or occupational functioning.".
"Dysthymia is chronic and lasts for at least 2 years, but is less severe than MDD.".
The Correct Answer is D
Choice A rationale:
"MDD is less severe than dysthymia but lasts for at least 2 years." This statement is incorrect. Major Depressive Disorder (MDD) is characterized by the presence of a major depressive episode, which can be severe and persistent, lasting for at least two weeks. Dysthymia, on the other hand, is a chronic but milder form of depression that lasts for at least two years, not MDD.
Choice B rationale:
"Dysthymia is characterized by alternating episodes of mania and depression." This statement is incorrect. Dysthymia is a chronic mood disorder characterized by a persistent low mood and other depressive symptoms. It does not involve alternating episodes of mania and depression. Alternating episodes of mania and depression are characteristic of bipolar disorder, not dysthymia.
Choice C rationale:
"Unlike MDD, dysthymia does not impair social or occupational functioning." This statement is incorrect. Both Major Depressive Disorder (MDD) and dysthymia can significantly impair social, occupational, and other areas of functioning. In fact, dysthymia's chronic nature often leads to long-term impairment in various aspects of an individual's life, similar to MDD.
Choice D rationale:
"Dysthymia is chronic and lasts for at least 2 years, but is less severe than MDD." This statement is accurate. Dysthymia is a chronic form of depression that persists for at least two years. While it may not exhibit the same level of severity as a major depressive episode, its long-term nature can still have a substantial impact on an individual's quality of life. This distinguishes it from MDD, which can have episodic occurrences.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
A manic episode is characterized by a distinct period of abnormally elevated, expansive, or irritable mood, often accompanied by increased energy, decreased need for sleep, and impulsive behavior. The client's description does not align with a manic episode.
Choice B rationale:
Bipolar disorder involves cycling between periods of mania or hypomania and depression. The client's statement does not provide evidence of mood cycling, which is characteristic of bipolar disorder.
Choice C rationale:
The client's statement directly describes anhedonia, which is a key characteristic of major depressive disorder (MDD). Anhedonia involves the inability to derive pleasure from activities that were previously enjoyable, and it is a central diagnostic criterion for MDD.
Choice D rationale:
Adjustment disorder is a condition characterized by emotional or behavioral symptoms that develop in response to a specific stressor. The client's statement is more indicative of a pervasive and ongoing lack of enjoyment, which aligns with the concept of anhedonia in MDD rather than the time-limited nature of adjustment disorder.
Correct Answer is C
Explanation
Choice A rationale:
Chronic stress is known to activate the Hypothalamic-Pituitary-Adrenal (HPA) axis, which leads to increased cortisol production. While cortisol is important for various physiological functions, chronic elevation of cortisol due to stress can actually have detrimental effects on the brain. Elevated cortisol levels have been associated with impaired neurogenesis (the formation of new neurons) and synaptic plasticity (the ability of synapses to change and adapt), both of which play crucial roles in maintaining cognitive function and mental health.
Choice B rationale:
This statement is not accurate. Chronic stress typically leads to hyperactivity, not hypoactivity, of the HPA axis, resulting in increased levels of cortisol. The increased cortisol levels can negatively impact neurogenesis and synaptic plasticity, which are key factors in depression and cognitive function.
Choice C rationale:
This is the correct statement. Chronic stress triggers hyperactivity of the HPA axis, causing elevated levels of cortisol. While cortisol is meant to help the body cope with stress in the short term, chronic elevation can lead to adverse effects on the brain. High cortisol levels have been linked to impaired neurogenesis and synaptic plasticity, contributing to the development of depression and cognitive deficits.
Choice D rationale:
This statement is not accurate. Chronic stress tends to lead to hyperactivity of the HPA axis and elevated cortisol levels. Reduced cortisol levels, as suggested in this choice, are not commonly associated with chronic stress and its impact on depression.
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