It sounds like you are talking about me during my childhood!
When I grew up, albuterol and all the great stuff they have out there now, were non existant. I was on some crap called broncholixor, that worked fairly well, as long as you were immobile. I also had severe allergies........and to this day, more than an hour and a half in a house with a cat and it could kill me. Unfortunately, what happens in that hour and a half, takes 3 -7 days to undo. Needless to say, cat peoples houses are out for me.
As far as allergiy shots.......I got them since I was about 18 yrs od, because I couldnt take the allergy season anymore. I kept going to one doctor for a long time until he retired. I did feeel improvement over this time, and he even let me do my own injections at home (huge mistake).
When he retired, I went to another guy, who was a "Immunologist" which is what you should see.........not an "allergist". I saw this guy for about 18 months. I went in, got my injection and waited in the office 20 miutes afterwards (like your supposed to in case of a reaction) and left. Things went well for a while I thought? One thing is he did retest me...... and the average reaction from testing considered high, was about 11-15mm for the wheal. My grass was 35mm, and tree was 25 mm......which is huge!
Anyways, my arm would get swollen, warm and red. I would tell him the next week and he would back off on the doasge. Up it the next time, then he would back down again when it became red and swollen again.
One day I'm sitting there afterwards, and waiting my 20 minutes out. This guy kept staring at me. All I could think, was maybe to ask him if he had somse type of problem? I ignored, him and he kept staring at me like I was some sort of freak. Well, I started to feel a little weird, and checked my pulse.......it was 135 sitting! I stood up to walk over and tell the secretary how I felt, and as I stood I lost all my peripheral vision....and stumbled over to the window. I asked to get the doctor........and she said he's very busy right now, what can I do for you? I said and I quote, "Get the F$%^&*( doctor now!!!!" Well she did, and as he rolled around the corner, I rolled onto the floor. they took me in the office, gave me my three rounds of 0.3 1:1000 epi, put me on 100% O2 because I couldn't breath, started an IV, gave me steroids, and 3 liters of fluid. I got to the pint where I couldn't move, talk or respond.........just hear. The last thing I heard was, "his B/P is 72/39" and lights out. I woke up (at least its what I felt like) 1 1/2 hours later (with a surgeon and a trach tray set-up). His office was in an out patient surgery center coincidentally. I was drenched, he wanted to admit me, but I had other obligations the next day. I told him no, and he said if I hung out at tyhe office for the day, that would be the compramise. So yes an aniphylactic reaction is possible.
The odddssss?? In 2o yrs, he only had it happens twice.....does that help?
P.S.- needless to say no more shots for me.