CTCAE (Common Terminology Criteria for Adverse Events)

The CTCAE, or Common Terminology Criteria for Adverse Events, is a detailed system used by healthcare professionals to classify and grade side effects experienced by patients during medical treatments, especially in cancer care. It provides standardized definitions and severity levels for various symptoms and side effects, helping ensure clear communication, consistent reporting, and better management of patient care. The grading ranges from mild (Grade 1) to severe (Grade 4) or life-threatening (Grade 5), enabling clinicians to monitor, compare, and respond appropriately to adverse events.