Urgent prayer request for a friend

A friend's brother has just experienced sudden, extensive memory loss.  He's being taken to a treatment facility as I write these words.  Of course, there's no diagnosis available right now, but as I'm sure many of you are aware, that can be symptomatic of several ailments, all of them serious.

My friend and his family will be grateful for your prayers, I know.  I'll provide more information as and when I can.

Peter