Clinical signs are observable indicators of a medical condition that can be detected by a healthcare professional during an examination. These signs may include physical symptoms such as fever, rash, or swelling, which can help in diagnosing an illness. They are objective, meaning they can be measured or seen, rather than reported feelings or experiences from the patient. Healthcare providers often use clinical signs alongside patient history and laboratory tests to form a complete picture of a patient's health. Recognizing these signs is crucial for determining the appropriate treatment and management of various conditions, ensuring that patients receive the best possible care.