Many, many years ago, my homeopath told me of 3 laws:
From top to bottom;
From inside to outside;
From right to left.
So, if you have something in your left little toe, you are in good shape! ;)
It is interesting that this topic came about because just 3 days ago I was telling my son about it. He has a bad ezcema in his scalp and we want to get rid of it.