Was that slap an early sign of Alzheimer ?

Omar Sharif -the legendary actor- slapped a fan four years ago in Doha .Was that slap an early sign of Alzheimer ? The Egyptian actor's son claims his father got the disease but he is denying it
He is forgetting basic things from his life - he still believes his ex -wife , the great love of his life is still alive .
He is living in Egypt nowadays . How very tragic for a man who had been known for his excellent abilities in maths !

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