CASA's "medical assessment" of a pilot consists of hitting Dr Google with searches of the particular pilot's medical condition and quoting statistics from surveys and medical abstracts from around the world, many of these investigations having been conducted in nursing homes or are 10 or more years out of date and using these to refute specific, current reports of the pilot's condition from specialists, surgeons and GPs.
If you dare to have more than one condition, you face the double whammy of being referred as a "complex case," where you have to convince not just one CASA doctor but a committee of them taking a "collegial" approach to your case. Are they going to back you or back each other?