It's not the lactose, because Lacaid and other products like it don't take the reaction away. As an adult I tried those products hoping it was the lactose or that I had "out grown" the allergy enough to just be intolerant. With the eggs and the poultry I know it's the protein that I am allergic, too.
I think one of the worse things, is when people give you "the look" and then ask, well what DO you eat??? While dining at a Crackle Barrel on a road trip I had asked the waitress a question about ingredience and this lady from the table behind us, turned around and looked at me like I was an alien! I'm not sure which is worse, the Oh you poor thing or the man you are werid looks.
I just found this site not too long ago as well. It is nice to hear other people have the same problem. I'm the butt of a lot of jokes around my friends - not that it bothers me.
I haven't tried the free range chicken, but probably will at some point. I guess I have it better than most, I can eat eggs without incident and can handle raw/cooked poultry without it causing a reaction (which is good - my wife LOVES chicken). My reactions started when I was pretty young usually consisting of swelling of my throat and chest pains. Nausea is a crap shoot, sometimes I get it, sometimes I don't. The chest pains are by far the worst for me though.
If anyone has tried the free range, please let me know!
Again I want to say, don't fool around with your allergy. I am not sure what your reaction is, but EVERYTIME you are exposed to the allergen you have a chance of having a very bad reaction. Just think you went for 20 yrs with no problem and then bam now have an allergy. That shows one day things can work one way in your body and the next it's totally different. Eating chicken, tuna, turkey and etc shouldn't be so important to your life that you are willing to risk it. I have been allergic my whole life so I don't know what I am missing, but I do know living to see my kids have kids is more important to me that eatting wings on Sunday with my husband, having eggs with breakfast, or having ice cream instead of sorbet. Hey, I am a woman who can't have chocolate. If there is a magic pill out there I don't know about it, I wish there was, but I also know my allergies could be worse.
Here are a website that may explain more about the ins and outs of poultry (food) allergies.
As to why you react more severely to whiter the meat - not a clue! I tried finding something/anything on the internet and I couldn't find a thing.