How to Know Tomato Allergy Symptoms

Few of us expect to feel our lips tingle and our chests constrict when we bite into a pizza or an Italian sandwich. But for the small number of people with an allergy to tomato, that's exactly what can happen. Though most of us know that food allergies are prevalent and even on the rise, the symptoms of tomato allergies are lesser known than that of more publicized food allergies. That doesn't mean that the symptoms are any less severe or worth less notice than those of other food allergies.

Difficulty: Moderately Easy

Instructions

1. Recognize the difference between a food intolerance and a true allergy. Food intolerances are more common than food allergies and, though the body's chemical reaction to the food can cause very real and unpleasant symptoms, food intolerances have less potential for fatality. A true allergy to tomato is rare and caused by a histamine reaction to a protein usually found in the seeds, skin and juice of the tomato.

2. Take note of when the symptoms occur. Food allergy symptoms tend to manifest very soon after the food is ingested. It's important for your doctor to know the timetable so that he might rule out whether you are experiencing a life-threatening allergic reaction or a food intolerance. You should also take note as to whether your symptoms have become increasingly worse with each exposure to tomatoes.

3. Avoid fresh tomatoes if after eating them you experience swelling or itching around your mouth, hives, diarrhea, vomiting, difficulty breathing or a persistent skin rash. Though scientists don't know the exact reason, many people with an allergy to tomatoes only experience symptoms when in contact with the raw fruit. Some patients can eat processed products such as catchup or tomato paste with no discernible reaction.

4. Connect tomato allergy symptoms to other food contact allergies. The tomato plant is closely related to potatoes, eggplant and tobacco. They are all members of the Deadly Nightshade family and have a similar structure. Since a true tomato allergy is so rare, if you're allergic it's likely that you will have symptoms after contact with these other foods too.

5. Make an appointment with an allergist or your family physician for food allergy testing. For a suspected tomato allergy, you are likely to undergo both blood tests and pin-prick allergen testing. Pin-prick testing allows the allergist to inject small amounts of food proteins in a grid pattern on your back to look for localized reactions, while the blood test can reveal an increase in the IgE allergy antibody in your system.

Tips & Warnings

• Even if you only suspect you are allergic to tomatoes, avoid them until you know for sure. Since food allergies can increase in severity with each exposure, it's best not to take any chances.
• Always seek immediate medical attention if you are experiencing swelling of the throat and difficulty breathing. These can be signs of a severe and potentially fatal allergic reaction know as anaphylactic shock.

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[cluffbristol22]

on 7/3/2009 I'm not sure if I'm allergic to tomatoes and the like, but I constantly get diarrhea. I feel sick all the time and I'm tired a lot. Also I have this strange redness around my lips which makes them look clownish. My eyes itch and water a lot, too. I have a bunch of itchy patches on my scalp, under my jaw, and a few other places. Does this sound like something that might come from a tomatoe allergy?

[dcheney]

on 3/29/2009 I am allergic to tomatoes. Has anyone heard of the Deadly nightshade family? If you are allergic to tomatoes, chances are you can't eat potato either. Anyway, my symptoms are coughing after I eat tomatoes. It's persistent cough too. I also get flushed in the face and I have a hard time catching my breath. But, my mouth never burns and is never affected. However, I do get these red bumps on my scalp. I don't know if those are from stress or what. Does anyone else have these symptoms from eating tomatoes?

[tmw83]

on 3/16/2009 Cristee, in response to your post i have had exactly the same symptons with my eyes for over a year now. I have seen a few doctors and they think it could be an allergy but i haven�t had any allergy testing yet. I have been using eczema creams when it flairs up which help but they never get rid of it completely. I have been racking my brain to figure out what it is and recently I have started to suspect it may be an allergy to tomatoes. I would be interested to know the results of your tests and whether you have found a cause?

[maidenstarchild]

on 1/21/2009 I have a large number of food allergies, according to the IgE blood test and the prick test, but I have no, I repeat NO, physical reaction to foods when I eat them. I have no trouble breathing or rash or swelling or other symptoms and I wasn't even aware of my food allergies until I got tested. I went in to be tested for physical allergies and wasn't even worried about food allergies. I am a chef and I am going out of my mind. I have never had any adverse reactions and now, suddenly, I am expected to stop eating everything from wheat, dairy and eggs or tomatoes beef and strawberries! I really dont' know what to think.

[Cristee]

on 1/7/2009 1-7-09 I recently found out I am allergic to eggs, oats,peanuts.The allergy specialists checked the tomatoe allergy & stated that I was not allergic to them but they do the same to my lips also except I get almost blister looking bumps all around my lips & they stay like that for a week. Lately when I have eaten spaghetti or ketchup my eyelids will turn red & itchy and swell up so I avoid all tomatoe products. I am now having problems with my eyelids swelling & underneath my eyes swelling & being itchy, it almost looks like I have been in a fight except for they are very dry looking. If anyone has any symptoms like this or advice please let me know... I am going back to the allergist & having patch skin tests in a couple of weeks.