Final answer:
Hallucinations are not a symptom of dysthymic disorder.
Step-by-step explanation:
The symptom that is not part of dysthymic disorder is D. Hallucinations. Dysthymic disorder, also known as persistent depressive disorder, is a form of depression characterized by a chronic low mood, low self-esteem, and feelings of hopelessness. Other common symptoms include poor appetite, fatigue, and a lack of interest in activities. Hallucinations, on the other hand, are more commonly associated with psychotic disorders such as schizophrenia.