👉 Hurt fluid, also known as serous fluid, is a clear or slightly yellowish liquid that fills the cavities within the body, such as the joints, pleural space (surrounding the lungs), and pericardial sac (surrounding the heart). This fluid serves to reduce friction between moving surfaces, like the bones in joints or the lungs and chest walls during breathing. It also helps to distribute nutrients and remove waste products from cells. The amount of hurt fluid can be normal, but an excessive accumulation may indicate inflammation or injury, as seen in conditions like arthritis or pleuritis.
