I'm not sure what I could say that's reassuring, but I did read this. I'm sorry. It sucks so hard when there's nothing you can do but wait. Have an internet hug if you want one.
Okay from my limited experience, that sounds like a panic attack. What I did last time was got someone to get me water (i was having trouble moving with the sobs) and sat down. Sometimes it helps to read, it just distracts me and tells my brain to think abeout something else, and to calm down. Usually reading helps me stop crying too. But if reading is unattainable (that happens) I just sit or lay down, and try to think of calming things to make my brain register that it doesnt need to murder me because things are stressfull. If you can drink the water, it usually helps, because you cant hiccup/heave/gasp/other strange movements while you have water in your mouth. Brain knows to not purposefully spill things. Also hydration is good. I am so sorry about all this, and I hope that he can live. Many, many, many, many, hugs. *hugs*
*Sends hugs your way* Hopefully everything turns out ok. 14 year olds are still surprisingly resilient, and it's at least a little easier to heal brain damage at that age. It might be upsetting for you depending on how sedated/out of it he is, but might it be possible to set up a brief skype call with your parents while they're with him? Depending on the hospital, they sometimes have services available or allow PCs- it's not as good as actually being there, but it helps a little.
