A symptom is any change in the body's normal function, such as pain, fever, fatigue, or swelling, and can also include mental signs like anxiety, depression, or confusion. While the same condition can present different symptoms in different people, these changes are crucial clues that help identify and diagnose health issues, guiding you toward the most appropriate treatment. To discover the possible cause of your symptoms, log in to access detailed information on symptom management and the next steps in care—an approach that can save you both time and money.