sorry you are going through this

medication can help but may not be good in the long run but talk it through with a doctor

controlling the breath, I am lucky that I had this skill before my injury, it seems silly to say we should learn to breath properly but for me it works

slow rhythmic breathing allowing your and pushing your abdomen out on the in breath and in on the out breath,

the object is not to hyper ventilate, but the opposite just to slow every thing down

practice this when you are calm , it really can help