Font Size. A. A. A. Nerve blocks are used for pain treatment and management. Often a group of nerves, called a plexus or ganglion, that causes pain to a specific organ or body region can be blocked with the injection of medication into a specific area of the body. The injection of this nerve-numbing substance is called a nerve block.
Symptoms & Causes. The most common symptoms of gas include burping, passing gas, bloating, and pain in your abdomen. Gas normally enters your digestive tract when you swallow air and when bacteria in your large intestine break down certain undigested foods. Doctors may diagnose the causes of gas with a medical history and physical exam.
Gas in the digestive tract may not cause symptoms, other than the normal passing of gas. In some cases, gas can cause abdominal pain or discomfort, excessive belching or flatulence, and abdominal bloating. These symptoms can indicate a more serious disorder, such as peptic ulcer disease, gastroesophageal reflux disease (GERD), intestinal obstruction, or malabsorption syndromes (e.g., lactose intolerance).