In reply to PaulHermes:
This might be a shoe sizing and tightness issue.
I have pretty wide feet, and in almost all cycling shoes if i do them up tight enough to stop my foot moving it compresses my arch and causes my feet to go slowly numb, starting with the little toe and steadily working its way across the foot.
I've ended up having to try on a LOT of shoes to remedy this, and as a result almost always have to pay full price