Sorry to derail but what was this?
I'm anaphalactic to paper wasps or rather I was.
I have always had a slightly bad swelling reaction to wasps in general. However a few years ago I was driving a 4x4 along the beach on Fraser Island QLD when wasp the size of a sparrow came through the air vent and stung me on the arm. It looked looked like I had half a golf ball under the skin for a few days but I didn't think anything of it.
A few weeks later I was moving the lawn on a hot day and after putting g the mower back in the garage I also put a ladder back in that I'd left out earlier.
I must have bumped a paper wasp nest as I put the ladder back (they love garge entrances and the eves of houses). I got stung about 20 times on the shoulder and they are far worse than European wasps. I squished most of them while swearing vigorously. I then went inside to get bug spray tobfinish them off. I sprayed the nest and legged it to avoid getting stung again and after a few steps felt a bit light headed. I sat down on the steps and then got back up azfew mins later when I felt fine. I then felt far from fine and as I went unconscious I managed to roll down the lemon my side.
The next thing I remember was fighting to stand up despite the best efforts of the paramedics.
My wife and son were out at the shops so I lay on the lawn for an unknown length of time in extreme heat and direct sunlight. My son's mate from across the road saw me, came over and prodded me with his foot and then ran over to tell his folks. Initially his folks didn't believe him as he had a rep for tall tales but eventually they came out and rang an ambulance.
As the ambulance arrived my wife and son arrived home and my wife though I'd had a heart attack as a work colleagues so husband had dropped dead at 50 axfew days earlier.
After the paramedics got me in to the ambulance they gave me plasma and I recovered fast. I got checked out at the hospital and was discharged soon after but not before my wife posted a picture of me asleep in emergency on Facebook :-)
The hospital told me it was dehydration combined with getting stung on the virus nerve so I had a good night's sleep and carried on
A couple of weeks later my wife was telling the story to a neighbour who she met on the commuter train in to Sydney. The neighbour was a nurse at a hospital allergy centre and immediately thought I had experienced an anaphalactic event and I should get tested.
Long story short, I was seriously anaphalactic to the point the next time might have been fatal and had 6 months of immunotherapy treatment and now carry an epipen.