Hi Pemca, stuart and Todd, as I told todd in his post could be old age, and found some info that may help as well.
A lack of adequate blood flow can cause hair loss on the legs, according to Dr. Mark A. Sanford at the University of Alabama-Birmingham Health System. Hair loss caused by poor circulation usually manifests as a thinning or complete loss of hair below the knees, Sanford says. Other symptoms that may accompany this hair loss are coldness in the feet and thickening of the nails. Conditions such as congestive heart failure, kidney failure and diabetes may cause poor circulation in the legs.
So share this amungst your selfs.
Good Luck
I have EXACTLY the same symptoms at 62 years of age. Sudden onset.
I could care less about the looks, but I am worried it might be a symptom of a more serious condition!