A medical complication is a health condition that arises during or after medical treatment or disease diagnosis. Some synonyms for medical complication include medical mishap, medical setback, health complication, health snag, and medical problem. These terms refer to any unexpected or undesirable change in the patient's health status that may arise during treatment, recovery, or rehabilitation. Other synonyms may include disease complication, medical crisis, health emergency, and treatment failure. Complications can be caused by various factors including surgical procedures, anesthetic reactions, medication side effects, and disease progression. Despite best efforts, medical complications can occur, highlighting the importance of monitoring and communication between the patient and healthcare providers.