Which of the following is an effect of cold application?

Which of the following is an effect of cold application?

• A. Decreased pain perception.
• B. Increased tissue temperature.
• C. Increased metabolic rate.
• D. Vasodilation.

Answer: (A)

Cryotherapy lowers tissue temperature, which slows nerve conduction and reduces pain signals reaching the brain, often producing analgesia and a higher pain threshold. This decrease in nerve conduction also helps limit inflammation and edema by reducing metabolic demands and vascular responses. Because cold causes vasoconstriction and lowers metabolic rate, it does not raise tissue temperature or metabolic activity, and it tends to reduce blood flow rather than increase it. So the effect best described here is the reduction in pain perception, making it the correct choice.

Cryotherapy lowers tissue temperature, which slows nerve conduction and reduces pain signals reaching the brain, often producing analgesia and a higher pain threshold. This decrease in nerve conduction also helps limit inflammation and edema by reducing metabolic demands and vascular responses.

Because cold causes vasoconstriction and lowers metabolic rate, it does not raise tissue temperature or metabolic activity, and it tends to reduce blood flow rather than increase it. So the effect best described here is the reduction in pain perception, making it the correct choice.