64-Year-Old Male with Diffuse Itching After Starting Amlodipine

A 64-year-old male presented with diffuse itching over the past 6 weeks. He reported taking amlodipine for the first time about 1–2 weeks before his itching started. His medications also include aspirin 81 mg and acetaminophen as needed for pain. He is not on any other medications. He has a history of diverticulosis. He denied any rash with his itching. He reported excoriation marks where he had been scratching.