What is the reason for numbing feelings at the extremities of the fingers?

I am 60 years old. I am suffering from an eerie sense of tenderness at the ends of my fingers of both hands. Sometimes the fingers are insensitive and numb.I don't have diabetes mellitus or any other abnormal maladies.What is the explanation for the cause of this phenomenon and how to treat this with home remedies as well as other applications intended to relieve this symptom,