Gastrointestinal problems are one of the most common health issues prevalent nowadays. However, most of the gastrointestinal diseases are easily preventable and can be treated well if detected at the right time.    There are certain signs or symptoms of gastrointestinal problems that you should not ignore. These are:   Inflammation in the abdomen region: You are likely to have a swollen belly if you have abnormal tissue growth or an infection in your intestines.