This document discusses medical errors, including definitions, types, causes, disclosure, and prevention. It defines medical errors as the failure to complete a planned action as intended or using the wrong plan. Types of errors include missed diagnoses, inappropriate discharges, and incorrect dosages. Common causes are ignorance, fatigue, faulty communication, and system flaws. When disclosing errors to patients, physicians should do so promptly, accept responsibility, apologize, and outline plans to rectify harm and prevent recurrence. Error prevention includes checklists, electronic records, guidelines, and staff training. In Saudi Arabia, medical errors are divided into regulatory offenses and technical offenses, which are evaluated based on standards known by practitioners and acknowledged by experts. The Medical Legal Committee investig