A 73-year-old woman presents to her physician complaining of a nonproductive nagging cough. Her medical history is remarkable for breast cancer treated by mastectomy 25 years prior to hospital admission and left lower extremity melanoma treated by excision 15 years prior to admission. She has a history of type II diabetes, a history of asthma that began around the age of 12 years, hypothyroidism, and a history of childhood acne treated with radiation therapy. She also has a 10 pack-year history of smoking, having stopped 43 years ago. Her surgical history is notable for a tonsillectomy, adenoidectomy, nasal polyps, dilatation and curettage, hysterectomy, and thyroidectomy. At presentation, the patient is receiving levothryoxine, conjugated estrogen, and latanoprost eye drops. She reports multiple allergies to medications, including iodinated contrast, erythromycin, codeine, tetracycline, nitrofurantoin, aspirin, atropine, and bacitracin.