Special questions should be asked about each system e.g. respiratory, gastrointestinal or cardiovascular system. Questions are mainly limited to the body system involved in the present history. For example, if the presenting complaint is abdominal pain it would be important to ask about appetite, vomiting, diarrhoea or constipation, worms, blood in the stool and weight loss. If the right questions are not asked, you will not be able to get the correct answers.