The symptoms that "count" toward my diagnosis started when I was about 50: numbness in part of my face, mild trigeminal neuralgia, balance issues, fatigue, etc.

When I look back, I've had L'hermitte's for as long as I can remember. I was clumsy, lost my balance easily as a child/teenager. I was always the teenager under a tree in the shade while my friends were lying on the beach slathering on baby oil. But then...a LOT of people don't do well in heat.

I'll always wonder how long I've had it.