[open to all!]
The medical care available on Stacy is far beyond anything that the Four Nations had, better even than the powers of skilled waterbenders to heal. Which is why Zuko is lying in discomfort now, not raging agony, as the burn on his back heals.
Because of the location of the injury, he's lying on his stomach on a specialized cot, with his arms supported by low rests below his body. The open welts on his back are not entirely healed, and have been left exposed to the open air to allow the heat to keep fading. Occasionally Zuko breathes out as he uses his own firebending to try to expel some of the burn's excess heat.
He could ask to be put to sleep while the healing process continues, but he hasn't. He has too much to think about.
Because of the location of the injury, he's lying on his stomach on a specialized cot, with his arms supported by low rests below his body. The open welts on his back are not entirely healed, and have been left exposed to the open air to allow the heat to keep fading. Occasionally Zuko breathes out as he uses his own firebending to try to expel some of the burn's excess heat.
He could ask to be put to sleep while the healing process continues, but he hasn't. He has too much to think about.