Final answer:
The patient may be experiencing drug withdrawal symptoms.
Step-by-step explanation:
Based on the symptoms described, the patient may be experiencing the side effects of a drug or substance. Dysphoria, fatigue, hypersomnia, and vivid dreams can be associated with withdrawal symptoms. The request for double portions may suggest an increased appetite, which can also be a withdrawal symptom. It is important for the patient to seek medical attention to determine the cause of these symptoms and receive proper treatment.