Question: A 60-year-old man presents for evaluation of an ongoing tremor. He notes the tremor has been present for roughly 1 year. He says it occurs in both hands, primarily with activity and most notably with writing and eating, and it appears to improve with alcohol intake. He has a medical history of well-controlled hypertension, hyperlipidemia, and benign prostatic hypertrophy. He reports his father had a similar tremor. On physical examination, the patient's vital signs are normal, and a rhythmic, moderate amplitude tremor is noted to the wrist and fingers when his hand is outstretched and with finger-nose testing. The tremor is absent at rest. There is no dysmetria with finger-nose testing, gait is normal, and there is no rigidity with passive movements of either arm. What is the likely diagnosis in this patient? Benign essential tremor Dystonic tremor Enhanced physiologic tremor Parkinson disease