Gas pains Belching or passing gas clears gas from the digestive tract, but when gas is stuck it causes abdominal pain. Irritable bowel syndrome Irritable bowel syndrome is a common condition that causes painful spasms and cramping in the large intestine. Gastritis Gastritis is an inflammation of the stomach lining, causes stomach upset, irritation, andContinue reading “Bloating , hunched posture, parasites and signs and symptoms”