Good to know...
There is an extremely rare skin disease which make the man look like a tree (200 cases in the world).
It is named the Lewandowsky-Lutz disease, it is incurable and causes warts apperaing to the bark of a tree.
The most known case is the one of the Indonesian Dede Koswara.
I insert two links into this article, for those who want to know more about it.