Does Prince Salman has Alzheimer?

A Saudi source sent me this:  "Hi As'ad i have heard this rumor for the third time. the first time was from Sa'ad Alfagieh the saudi opposition in London almost 5 months ago.  the second time i heard it was almost 3 months from now by a friend who works in the ministry of foreign affairs and says that the rumor has been growing in office ever since.  and now from mujtahid? . so maybe its true OR another theory, its just the same rumor and it takes some time to circulate."