During the past few weeks, a 14-year-old boy has noticed blood on the proximal nail folds of the second and third fingers of his dominant hand. He denies any pain or pruritus. The patient is otherwise healthy and takes no prescription medications.
Which of these questions do you ask the patient?
A. What sports do you play?
B. What are your extracurricular activities?
C. Do you bite your nails?
D. Do you take any over-the-counter medications or alternative remedies?
E. All of the above.
(Answer on next page.)