Severe ME/CFS: A Guide to Living was written entirely on phone by Emily Collenridge, someone who suffered from very severe ME/CFS (one of the illnesses with lowest Quality of Life) and could only use her phone for brief moments. Over years, writing a tiny bit each moment she was able to use her phone, she wrote her book which was published.
This book is really invaluable to the patient community as it is one of the only ones we have, since most people with that level of illness aren’t able to communicate at all.
Sadly she died in hospital a couple years later, in her early 30s.