What term describes swelling caused by fluid accumulation?

The term that describes swelling caused by fluid accumulation is edema. Edema occurs when excess fluid builds up in the body tissues, leading to swelling in the affected areas. This condition can be localized, affecting a specific area (like a sprained ankle), or generalized, where it impacts larger regions of the body. The physiological mechanisms behind edema can involve factors such as increased capillary permeability, changes in blood pressure, or lymphatic obstruction. Understanding this concept is crucial in physical therapy, as it helps practitioners recognize conditions that may require treatment or intervention to reduce swelling and improve mobility.