Did you know that, according to some studies, about 85% of medical illnesses have emotional factors, stress and anxiety as a contributing factor? This percentage is even higher in chronic illness.
Assuming that is true there is no doubt that the consideration of and attempts at resolution of this factor is never or hardly ever part of medical treatment of any medical illness. For that reason, newly diagnosed cancer patients, for instance, almost never get referred for psychological support for and relief of the emotional, pain and anxiety issues involved.
It is a fact (documented by David Spiegel MD and others, researchers and clinicians) that breast cancer patients, for instance, have better quality of life and life expectancy with such support. You might like to have a look at a video he posted on youtube some years ago that you might find interesting.