More than once before, Dante had been burned, and each time he was reminded of why humans feared fire so much, and why hell has always been depicted as a land of eternal fire. One thing about burning, however, was that its main cause was an external force.
Rarely, if ever, does such force come from inside the body, but one can still imagine how painful it would feel to burn from the inside out, and without having to experience it, people could still agree that it would be a harrowing experience. But people's imagination has been proven to be lacking.
When he noticed the heat spreading out from the inside of his hand, Dante didn't feel the same sensation he would have felt if he were to touch something hot. Instead, a slight discomfort struck him first, then came the pain, its source being his wrists; the area where his bones met the metal from the simple implant.