A nurse is providing education to a group of nursing students about major depressive disorder (MDD). Which of the following statements accurately describes a characteristic of MDD?

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.

The correct answer is choicea. MDD is more prevalent in older adults.

Choice A rationale:

Major depressive disorder (MDD) is indeed more prevalent in older adults.This demographic often faces unique stressors such as chronic illness, loss of loved ones, and social isolation, which can contribute to higher rates of depression.

Choice B rationale:

MDD is not primarily caused by a single factor.It is a complex disorder with multiple contributing factors, including genetics, brain chemistry, environmental influences, and psychological factors.

Choice C rationale:

Anhedonia refers to the loss of interest or pleasure in activities that were once enjoyable, not excessive sleeping.Excessive sleeping is known as hypersomnia.

Choice D rationale:

MDD cannot be diagnosed if only one symptom is present.The diagnosis requires the presence of multiple symptoms, including depressed mood or anhedonia, for at least two weeks.