Physical assessment is a systematic examination of a patient's body to gather objective data about their health. This process typically includes observing the patient's appearance, measuring vital signs like blood pressure and heart rate, and examining different body systems through techniques such as palpation, percussion, and auscultation. The goal of a physical assessment is to identify any signs of illness or abnormalities. Healthcare professionals, such as nurses and doctors, use this information to make informed decisions about diagnosis and treatment, ensuring that patients receive appropriate care based on their individual health needs.