One of the most mysterious puzzles on Game of Thrones is greyscale, a strange disease that causes human skin to become stone-like. What on earth could actually cause it? We asked a dermatologist.

Greyscale is always fatal in adults, but can be survived by children — it's sorta like Westerosi chicken pox that way. In fatal cases, the disease spreads across the entire body, leaving the ...

But for the living who must face the White Walkers, it’s not the end of greyscale that should worry them, it’s the disease’s beginning. Because in a world where ancient legends now march ...

What is greyscale in ‘Game of Thrones’? In Game of Thrones, greyscale is a dangerous disease that causes the skin’s surface to harden and calcify. It is often fatal, but those who survive ...

Fatal diseases play a supporting role at best — but a fearsome fictional disease had its turn in the spotlight this week. Greyscale appears to be a mash-up of leprosy and smallpox. Like medieval ...

In the series, greyscale is presented as a disease that leaves the skin stiff, cracked and flaking. It appears black and grey and is like stone to the touch – eventually the infection spreads ...

In Martin's A Dance of Dragons, greyscale is described as a contagious disease with potentially fatal consequences. The condition turns the skin to a stone-like texture and becomes cracked.

Now that greyscale is becoming more relevant ... As George R.R. Martin explains in a featurette about the disease (see below), "It calcifies the skin." At first, it's just a thin patch, but ...

A major character on "Game of Thrones" recently contracted a nasty disease that turns your body to stone, and he's now in search of a cure. Greyscale, as it is known, has been referenced a number ...