Ascites

Ascites is a conditions in which fluid collects in spaces within your abdomen. As fluid collects in the abdomen, it can affect your lungs, kidneys, and other organs. Ascites cause abdominal pain, swelling, nausea, vomiting, and other difficulties. Ascites result from high pressure in the blood vessels of the liver (portal hypertension) and low levels of a protein called albumin. Diseases that can cause severe liver damage can lead to ascites. 

Fluid buildup rarely occurs in otherwise healthy people. It develops as a result of other diseases, most often cirrhosis. Ascites is the most common complication of cirrhosis.

Cirrhosis is the most common cause of ascites. Other conditions that can cause it to include heart failure, kidney failure, infection or cancer.