posted on Jan, 23 2013 @ 02:32 PM
My Mum actually had a blue spot, like you had described, but on the top of her foot. It sort of looked like a blue mole, but was caused by some sort
of special silver that somehow got under the skin and eventually built up there. Of course she got it removed some years later.
In my opinion, I think it would be best to get the spot checked out. Atleast to make sure it's not something harmful.