I have been misdiagnosed and taken wrong medicine for 4 years for a problem by a top specialist, the doctor kept making up reasons on why I'm not getting better.
By luck I consulted with another specialist due the former doctor not being available at and odd time, and some re-tests help determine that I need a different class of medicines. I was better within months.
4 years of wrong medicines and over confidence from a leading doctor. Now I have a tool to double check what doctor has recommended.