Once the cause(s) for your nausea are found, it may be possible to remove or correct them. For example, if it is due to the cancer itself, some form of anti-cancer treatment would be a possible, but not necessarily the best, way to tackle it. If it is due to cancer in the brain, corticosteroids [...]

If you would have accepted a common-sense explanation for it before, you probably should now.

I’m afraid that many doctors and other practitioners who treat people with cancer behave as though symptoms are not important. These practitioners don’t ask about them and will treat you in an inattentive and impatient manner if you try to tell [...]