Wow, just wow. I'm with others here who are struck by the fact that this is a real person living a life with a family, etc. I hope they get him the treatments he needs.
Jut think, with the wonders biotech will unveil in the next couple of decades we could end "Tree Man's" isolation forever by genetically engineering a version of HPV that will produce these symptoms in anyone it infects.
This is what Brunner had in mind when he coined the term Age of Miracles.