How Did Ramsay Torture Theon?

After Winterfell is seized by Theon Greyjoy for the ironborn, Ramsay is dispatched by his father Roose Bolton to re-take it in the name of King Robb Stark. Ramsay's forces besiege the castle and he infuriates Theon by blowing a horn all through the night.

How does Ramsay torture Theon?

Theon has been tortured repeatedly by Ramsay Snow, who has since been legitimized by King Tommen as Ramsay Bolton. Ramsay and the Bastard's Boys remove the skin on several of Theon's toes and fingers, leaving him in agony for days before removing the joints but only after Theon begs him to remove them.

How was Theon tortured?

A Dance with Dragons. Ramsay's torture leaves Theon with some of his toes, fingers and teeth missing. The trauma of this torture causes Theon to lose much of his body weight, turns his hair white. Psychologically broken, he is forced to assume the identity of Reek.