A client reports experiencing persistent pain, redness, and warmth in the right elbow. Which information should the practical nurse obtain to effectively document the medical history?

A. Use of pain medication: Helps understand management but not primary for history-taking of inflammation. B. Pattern of inflammation: More relevant for tracking progress than initial history. C. Mechanism of injury: Important if trauma is suspected, but the case describes persistent symptoms. D. Duration of pain: Key for determining chronicity and possible underlying cause.