For example, the number of bowel movements may change, from 1-2 bowel movements per day to 2-3 bowel movements per day, or even a decrease in the number of bowel movements to 2-3 bowel movements per day, which leads to a change in bowel habits. For example, if the stool was formed, the stool may become unformed, or some patients may have watery or mushy stool, and there may be mucus. In functional gastrointestinal disorders, the patient will not have blood in the stool, nor will he lose weight, but may have abdominal pain. If this is often the case, it is recommended that the patient undergoes a colonoscopy to determine whether the lesion is organic or functional.