Treatment options that can help:
Portal hypertension — This condition utilizes medication to lower blood pressure in the portal vein, which carries blood from the stomach, intestines, spleen, gallbladder, and pancreas to the liver.
Reduce abdominal fluid—A buildup of fluid in the stomach is called ascites, and it responds well to treatment with medications that remove fluid from the body. It's also helpful to reduce sodium intake in your daily diet. If the fluid is excessive, it can be drained, screened for infection, and treated with medication as necessary.
Enlarged veins and bleeding in the esophagus or stomach - You may be prescribed medication to reduce blood pressure and prevent the bursting of a vein if you are experiencing internal bleeding or symptoms of internal bleeding. Those with black or bloody stools should visit the hospital right away. An upper GI endoscopy and surgical procedures may need to be performed to stabilize this condition.
Source: https://www.niddk.nih.gov/