What causes fluid build up in abdomen?

Fluid buildup in the abdomen, known as ascites, can be caused by several conditions, most commonly liver cirrhosis, which leads to increased pressure in the blood vessels and fluid leakage. Other causes include heart failure, kidney disease, infections, and certain cancers. Inflammatory conditions and pancreatitis can also contribute to fluid accumulation. Diagnosis typically involves medical evaluation and imaging to determine the underlying cause.