Middle Earth Riddles: The Terror Continues

[Samwise]

Susan, I'm sure this isn't it, but it's all I can think of at the moment: an itch?

When thirteen had fallen and the rest fled shrieking, leaving the defenders unharmed, except for Sam, who had a scratch along the scalp. A quick duck had saved him; and he had felled his Orc; a sturdy thrust with his Barrow-blade. A fire was smouldering in his brown eyes that would have made Ted Sandyman step backwards, if he had seen it.