Obligatory TV tropes reference: I Have This Friend
Though I think it's also likely that Matthew copy-pasted a portion from his friend's email, and just missed changing some of the pronouns.
The latter also makes sense given that one instance of "accidental first person-ness" is also the only instance of "accidental incorrect capitalization".
I may not have the community Karma of our dear Alicorn to make a top level post asking about a dear friend of mines illness that so far has remain undiagnosed but I would appreciate any discussion level support on these Symptoms.