I have transient allergies, much less of a problem now than when I was a teen. I went through a phase of being very sensitive to the vit c rich fruits....oranges, etc...and had various degrees of response from mild irritation to skin/lips, to sweeling tongue, bad skin reafctions etc the pain is they change...I can eat oranges now but sometimes reat to pineapple and strawberries. I am not sensible. I go with my gut feeling...if I think I can eat it, I probably can....if I've had problems with it before and haven't had any for a while (ie a few weeks) I touch it to my lip for a moment, see how it feels and if its ok go ahead. My reaction has always been slow enough that I feel confident doing this, and have been able to get an idea from my lips.....but I realise its paying with fire. I don't know if I would have full blown anaphalactic hock now, or just reactions, but I'm not prepared to give up fruit if I can still eat it! I have not had a sweeling of the tongue/throat type reaction since I was about 22 (so over five years)