Fruit cause hives

The weirdest thing happen to me a few days ago which never happen before. I realize fruits cause hives. a few days ago, I had an apple, an hour later, my upper back is completely red and very itchy. I didn't realize at first that was the problem, a couple of days later, I had an orange, again the same symptom came up about an hour later. Upper back turn red and itchy. I never had this problem before, but it just happen the last week. anyone had that before? any suggestions? Thank you.

Could also the fructose in the fruit. Do you have any other issues with fructose in other foods?

not that i know off. i just started to have these reactions a week ago. i have not notice reactions to other foods yet, hopefully not.

Several plants are associated with photodermatitis, which in this setting is more specifically termed phytophotodermatitis. These plants contain photosensitizing chemicals called furocoumarins, a group of structurally related molecules that cause skin damage with exposure to ultraviolet light. Responsible genera include Citrus (lime), Ficus (fig), Daucus (carrot), Cymopterus (parsley), and Pastinaca (parsley), among others.

The classic presentation is cutaneous exposure to one of these plants followed by ultraviolet light exposure (eg, harvesting crops on a sunny day) resulting in a rash developing in sun-exposed areas after 24 hours

I wonder if there is anything in the above article I read this evening. Maybe look up furocoumarins???

I have oral allergy syndrome (I am not allergic to apples if cooked etc). many of the common fruits and veggies if raw I have reactions to. My reactions are typically asthma flaring, hives around my mouth, swelling of my tongue itchy throat etc. I was tested for all food allergies and the ONLY food I am allergic to is peanuts the rest they determined is OAS. The times of season that are more prone to have reactions are when those plants are also giving off pollen I was told. Certain fruits and veggies are linked to certain tree pollens. What they have found with me that is odd though I can have some reactions to certain fruits in the same family but not others.


When these items are cooked well I do not have a problem for example I cannot eat a raw apple but I am able to eat aples in a pie, apple juice, applesauce etc...this does not hold true to strawberries though for me sadly. I also have issues with many other items but apples and carrots were my 1st 2 items I had issues with.

I have slowly throughout the years become intolerant to many more fruits and veggies as well that I use to tolerate just fine with no reactions.  If they rule out true allergies for you it MIGHT be what is going on