A 35-year-old woman presents with intermittent color changes…
A 35-year-old woman presents with intermittent color changes in her fingers over the past year. She reports that her fingers turn white, then blue, and finally red when exposed to cold or during emotional stress. Episodes are usually painful and last 15–20 minutes. She denies any history of digital ulcers, skin thickening, or joint pain. She has no significant past medical history. Physical exam: Normal skin between episodes No digital ulcers or pitting Peripheral pulses intact Nailfold capillaries appear normal Which of the following is the most appropriate initial approach to this patient’s condition?