What is an effect of icing an injury?

Icing an injury is beneficial because it may help reduce inflammation and pain. The application of ice causes vasoconstriction, which reduces blood flow to the affected area. This decreased blood flow can limit swelling and alleviate pain by numbing the nerve endings in the area. By minimizing inflammation, ice is a key component of the RICE (Rest, Ice, Compression, Elevation) protocol often recommended for managing acute injuries, such as sprains and strains.

While other options may present misconceptions—such as suggesting that icing might cause further swelling or that it is only useful for muscle injuries—the primary purpose of icing is to manage pain and swelling effectively, making it a vital first response in injury treatment. Additionally, icing does not eliminate the need for medical evaluation, as some injuries may require further investigation and treatment beyond initial first aid.