You should tell them anything you think is relevant to your care. They need to know how you’re feeling, and how that changes from day to day. They need to know your medical history, your family’s medical history, your current prescriptions, and any allergies. They need to know how you react to the medications and treatments you receive. Finally, please share your anxieties and concerns, so that they can play a positive role in helping you deal with them. Remember, your voice is the most important one on the team.