In 1994, John (my husband) and I went to Tuscany for a holiday. Life was fine, but I noticed I had to think very hard about walking down steps with no handrail, otherwise I would stumble and trip. Back home we lived our lives in the way we always had, but one evening we were returning home after walking the dog and my left leg was feeling strange.  We had to cross the level crossing, where I fell.  Feeling very stupid, as the commuters were all about, I thought I needed to find why my leg felt odd...