What is a recommended action if an adolescent experiences pruritus around the edges of a cast?

Using a hairdryer on a cool setting is a recommended action if an adolescent experiences pruritus, or itching, around the edges of a cast. This method can help alleviate itchiness without risking damage to the cast itself. The cool air can provide a soothing effect and may reduce the urge to scratch, which can lead to skin irritation or injury.

Applying lotion or soaking the cast in water could introduce moisture that might compromise the integrity of the cast, potentially leading to skin issues or weakening the cast itself. Using an ice pack may provide temporary relief but could also cause discomfort if left on for too long, and it does not address the root cause of the itching. Therefore, the most appropriate and effective method to manage pruritus in this scenario is utilizing a hairdryer on a cool setting.