When is Lou Gehrig not Lou Gehrig?

The Telegraph writes today that Lou Gehrig may not have had Lou Gehrig's disease after all. The motor neurone disease that killed him at the age of 38 might have been a different kind of condition, one that is triggered by blows to the head, and not the one named after him. The story is here.

This means that Professor Stephen Hawking may now suffer from his own disease instead of one belonging to someone else.

NB Information on Amyotrophic Lateral Sclerosis may be found here.