Answer
In forming solutions using the scientific method in the area of anatomy and physiology one must ask questions and research other areas. One must make several educated guesses on what system is or could be affected and causing the problem, for example if having issues with the digestive system but also having respiratory issues a person could ask questions about various medications as well as family history of these kinds of issues. If anything is found one must report their findings to a superior.
Work Step by Step
Make initial guess
Form the necessary questions with research
Ask questions of previous treatment from the research you did .
Do the family history for other causes to see how the various systems are being affected; digestive systems issues could cause respiratory issues and through the research and questions you formed you can see how to help the patient.