Patients with glomerulonephritis can have stomach distension and pain. Clinical manifestations of patients with glomerulonephritis include swelling of both lower limbs, or even generalized swelling, as well as symptoms such as nausea, fatigue, elevated blood pressure, foamy urine, stomach distension, etc. Checking urine routine shows that there are proteins in the urine, and the blood biochemistry shows that the blood albumin is reduced. The cause of stomach distension in patients with nephritis is the loss of protein in the urine of patients with nephritis, resulting in a reduction of protein in the body and the emergence of hypoproteinemia, so plasma osmolality is lowered, causing the outward flow of fluids and the emergence of gastrointestinal mucous membrane edema, peritoneal effusion, pleural effusion, and swelling of the lower limbs and other symptoms. If patients with glomerulonephritis have excessive abdominal fluid, it can cause stomach distension and pain. If patients with glomerulonephritis have edema of gastrointestinal mucosa, they have poor digestive ability, and if they have a little improper diet, it can also lead to stomach distension and pain.