Acaucasian patient with pale skin is treated for low blood pressure with medication that elevates the blood pressure; however, the skin's pallor does not change. which of the following is the most likely cause of the pallor in this patient?

I think the one that most likely cause the pallor in this patient is : Anemia

Pallor refer to a condition of pale skin. For caucasian person, red blood cells will give a bright healthy color for their skin. If they got anemia, the amount of red blood cells are reduced and causing a skin pallor