"There is quite a long list of maladies Lincoln supposedly suffered from. But, for the most part, they are merely theories."
Coming out of the medical field myself I have often wondered how these Doctors can make a diagnosis from a century and a half old black and white photo. I know they usually have other reasons for their opinions but I would bet my favorite fishing pole that no Doctor would risk making a diagnosis that way on a living person.
When famous people die, especially those we admire, it seems everybody wants to somehow own a piece of, or inject themselves into, that person's legacy.