Poor Tony, he looks like he's having a heart attack, which is what a panic attack often feel like; you're heart's pounding super fast, you feel like you can't breathe, you often sweat and even cry, you're whole body is shaking and you feel completely out of control. Even Pepper couldn't comfort him, when he was having a nightmare one of his machines almost killed her.
I loved those panic attacks. Especially when the kid triggers it. Iold. Plus realistic response to trauma? We never get that in comic book movies! Nice lighting on it. Since Tony is his own light source it makes for some nice shadows.
All the women in my family get panic attacks(they take medication for it so I've never seen one happen) and when Tony started having a panic attack, I almost had one myself. I was like, "oh man, is this how I'm going to be?" and I had to constantly slow my breathing and clench my fists xDD
I recently had a panic attack at the end of math class and although they were only about five minutes is an awful experience. Although everyone will tell you to calm down and breathe, you feel your heart sinks and you drown. The way you drew Tony is so perfect that I can almost remember the fear I felt when I gave the panic attack.