Have heard this is caused by fungus. Painting Lugol's over the nail,
under and around it, even over the whole toe--a few times will probably kill
it off. However, fungus is very hard to get rid of forever, so you may have
to do this for a little while. If you add some DMSO to it this will take it
in further and better, but lugol's will work by itself. On my own right
foot, the whole toe sometimes aches and the big joint where the toe joins
the foot also hurts sometimes. I have painted the whole area with Lugol's
and added some DMSO on a q-tip a couple of times and it sure isnt aching
now. In fact, what seemed like a young bunion is now smaller and not
'hurty' at all. Good for Lugol's!!! best wishes, pj