Congestion may refer to: Medicine Excessive fluid in tissues, vessels, or both, including: Edema, abnormal accumulation of fluid in the interstitium, manifesting as swelling Peripheral edema, edema in peripheral body parts such as limbs and feet Pulmonary edema, edema in the lungs that impairs breathing Congestive heart failure, heart failure resulting in congestion in one or more organs Nasal congestion, the blockage of nasal passages due to swollen membranes Prostatic congestion, a medical condition that happens when the prostate becomes swollen by excess fluid Other uses Network congestion, reduced quality of service when a network is carrying more data than it can handle Traffic congestion, vehicles clogging streets and highways Congestion pricing, a system of surcharging users of public goods that are subject to congestion through excess demand Congestion (film), a 1918 silent film