Which statement about cold therapy and nerve conduction is true?

Which statement about cold therapy and nerve conduction is true?

• A. Cold therapy has no effect on nerve conduction.
• B. Cold therapy can alter pain nerve conduction.
• C. Cold therapy only affects muscle tissue, not nerves.
• D. Cold therapy permanently destroys nerve function.

Answer: (B)

Cold therapy alters nerve conduction by lowering tissue temperature, which slows the speed at which nerves carry impulses and decreases their excitability. This dampens the transmission of nociceptive (pain) signals, producing analgesia. The effect is most noticeable on pain fibers, helping reduce pain perception, and it is temporary and reversible—once warmth returns, conduction and sensation largely return to baseline. Therefore, stating that cold therapy can alter pain nerve conduction is true. It is not correct to say there is no effect, nor that only muscles are affected, and it does not permanently destroy nerve function.

Cold therapy alters nerve conduction by lowering tissue temperature, which slows the speed at which nerves carry impulses and decreases their excitability. This dampens the transmission of nociceptive (pain) signals, producing analgesia. The effect is most noticeable on pain fibers, helping reduce pain perception, and it is temporary and reversible—once warmth returns, conduction and sensation largely return to baseline. Therefore, stating that cold therapy can alter pain nerve conduction is true. It is not correct to say there is no effect, nor that only muscles are affected, and it does not permanently destroy nerve function.