The nurse in the emergency department is obtaining a medical history from a female patient. Her husband answers the nurse’s questions before the patient can respond. The patient is quiet, trembling, and the nurse notes bruising to her face and arms. How does the nurse proceed?

Which neurotransmitter system is affected by the drug of choice for major depressive disorder? 

The nurse is assessing a patient who was reported to have an altered level of consciousness. The patient presents with rapid speech, impaired judgement, and rapidly fluctuating emotional state. After admission and treatment, the patient returns to a functional baseline. Which diagnosis best describes the patient’s behavior?