Yeah i have.
Im killed with it!! Not used injection, think its hard to come by.
I recommend promethazine taken at night, makes me sleepy (stops me waking up clawing my eyes)
A nasal spray helps. I aslo usec hayband, an accupressure band worn round the elbow. Aaand a red light machine from lloyds pharmacy helped a bit too....aside from the obvious staying in and closed windows which isnt easy.
I keep benadryl to hand that works in 15mins...i sit on my hands untill it kicks in lol x