The purpose of these questions is to document your symptoms before and after an "environmental intervention." Examples of such interventions include moving to a cleaner environment, mold removal, eliminating fragranced personal care, laundry or cleaning products, etc.

Two identical sets of 10 questions will be shown to you twice. The first set refers to your current symptoms, how you feel now after your environmental intervention. When you have completed the first set of questions, the next 10 questions will be shown to you. For these questions, recall what your symptoms were like before the environmental intervention.

Next, the program will automatically draw your responses and show them to you. The final result will be two diagrams as illustrated here—a red diagram representing your symptoms before the intervention and a  blue diagram representing your current symptoms after your the intervention.