Which statement best describes ischemic pain?

Which statement best describes ischemic pain?

• A. Pain described as deep and boring
• B. Constant, unremitting pain
• C. Pain due to loss of blood supply
• D. Pain referred in a cutaneous/dermatomal pattern

Answer: (C)

Ischemic pain is defined by its cause: tissue pain that arises when blood flow is reduced or cut off, leading to inadequate oxygen and nutrient delivery. When perfusion drops, cells switch to anaerobic metabolism and accumulate metabolic byproducts such as lactic acid, which irritate nociceptors and send pain signals to the brain. This cause-and-effect link—loss of blood supply provoking pain—best describes ischemic pain. Other descriptions don’t pinpoint the cause. A deep, boring quality is a general descriptor that can fit many types of pain. Constant, unremitting pain isn’t specific to ischemia and can occur in various chronic conditions. Pain referred in a cutaneous/dermatomal pattern points to nerve roots or dermatomal distributions, not to tissue perfusion loss.

Ischemic pain is defined by its cause: tissue pain that arises when blood flow is reduced or cut off, leading to inadequate oxygen and nutrient delivery. When perfusion drops, cells switch to anaerobic metabolism and accumulate metabolic byproducts such as lactic acid, which irritate nociceptors and send pain signals to the brain. This cause-and-effect link—loss of blood supply provoking pain—best describes ischemic pain.

Other descriptions don’t pinpoint the cause. A deep, boring quality is a general descriptor that can fit many types of pain. Constant, unremitting pain isn’t specific to ischemia and can occur in various chronic conditions. Pain referred in a cutaneous/dermatomal pattern points to nerve roots or dermatomal distributions, not to tissue perfusion loss.