According to the DSM-5-TR, which of the following is necessary for a diagnosis of Persistent Depressive Disorder?

Question

BlackTom AI · Accepted Answer

Persistent Depressive Disorder (PDD) requires a pervasive, chronic depressed mood; specifically, the DSM-5-TR stipulates depressed mood for most of the day, more days than not, lasting at least 2 years in adults (1 year for children/adolescents). This core duration-and-frequency requirement is the necessary diagnostic backbone of PDD.

Relevant knowledge points and concepts:
- PDD (formerly dysthymia) is characterized by chronicity: symptoms are present over a long period rather than episodic only.
- The essential criterion is depressed mood more days than not for the required time period (≥2 years in adults).
- Additional symptoms (≥2) may include poor appetite or overeating, insomnia or hypersomnia, low energy/fatigue, low self-esteem, poor concentration or difficulty making decisions, and feelings of hopelessness.
- The diagnosis also requires that symptoms are not absent for more than 2 months at a time, and are not better explained by other disorders, substances, or medical conditions.

Step-by-step reasoning:
1. Examine each option against DSM-5-TR criteria.
2. "Depressed mood more days than not for at least 2 years" directly matches the primary, required temporal/frequency criterion; without this chronic depressed mood, PDD cannot be diagnosed.
3. "Feelings of hopelessness" appears in DSM-5-TR as one possible associated symptom (low self-esteem/feelings of hopelessness), but it is not the single necessary criterion.
4. "Change in appetite" corresponds to "poor appetite or overeating," another possible associated symptom, not mandatory.
5. "Low self-esteem" is likewise listed as one of the additional symptoms but is not required alone.

Why the correct answer is correct:
The DSM-5-TR mandates chronic depressed mood (more days than not) for the specified duration as the defining feature of PDD. Other listed items are supportive symptoms and contribute to the diagnosis only when combined with the core chronic depressed mood and required number/duration.

Why other options are incorrect:
- Feelings of hopelessness: possible symptom but not the required defining criterion.
- Change in appetite: an associated symptom, not necessary by itself.
- Low self-esteem: one of several potential symptoms, not obligatory.

Conclusion: The correct answer is "Depressed mood more days than not for at least 2 years," which matches the provided answer.

According to the DSM-5-TR, which of the following is necessary for a diagnosis of Persistent Depressive Disorder?单项选择题

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