In a book I read about all kinds of behavioural oddities people displayed when travelling alone. Then the author continued to mention his own idiosyncrasies by writing "Me, I get a sort of interrogative diarrhoea, I ask private, internal questions (...)". What, I wonder, is the function of/grammatical term for "me"?
You can think of it as an abbreviation, e.g.
"When it comes to me, I get a sort of interrogative diarrhoea..."
English Idiomatic Expression: “When it comes to…” by Robby on October 31, 2012
... or "With regard to me, ..."