Analysis of information sources in references of the Wikipedia article "Dame Edna Everage" in English language version.
Claiming to suffer from Asperger's, bi-polar, gluten intolerance, restless legs and attention deficit disorder, there might just be a clue to the truth in that list of conditions as to why this is a farewell tour.
In her defense, Dame Edna insists she has "mild Asperger's syndrome" and "says the things other people wished they could say" but keep a lid on.