Final answer:
The next clinical step is to schedule a follow-up visit without starting medication.
Step-by-step explanation:
The next clinical step for the 66-year-old man with symptoms of depression, poor hygiene, and urine stains on his pants would be to:
- Schedule a follow-up visit without starting medication
Since the patient is experiencing new-onset depressive symptoms and cognitive impairment, it is important to conduct a full medical workup to identify any potential underlying medical conditions that may be causing his symptoms. This may include performing laboratory tests, imaging studies, and consultations with other specialists, as needed. Only after a comprehensive assessment can an appropriate treatment plan be developed.