What is the difference between intolerance and allergy ?

Is in attendance any point where intolerance to a solid food (say milk or eggs for example) turns into an allergy or are they totally unrelated ?

Is intolerance showing up single as digestion problems and not other allergy symptoms ?

Can you mistakenly interrpret intolerance as allegry in blood test or vica versa ?

Answers:
An intolerance would not show up as an allergy in blood test.

here's info from webmd.com


What Is a Food Allergy?
A food allergy is an immune system response. It occur when the body mistakes an ingredient in food -- usually a protein -- as destructive and creates a defense system (antibodies) to fray it. Allergy symptoms develop when the antibodies are battle the "invading" food. The most adjectives food allergies are peanuts, tree nuts (such as walnuts, pecans and almonds), fish, and shellfish, milk, eggs, soy products, and wheat.

What Is Food Intolerance?
Food intolerance is a digestive system response a bit than an immune system response. It occur when something in a food irritates a being's digestive system or when a personage is inept to properly digest or breakdown, the food. Intolerance to lactose, which is found within milk and other dairy products, is the most adjectives food intolerance.

What Are the Symptoms of Food Allergy?
Symptoms of a food allergy can selection from mild to severe, and the amount of food essential to trigger a counterattack vary from human being to being. Symptoms of food allergy may include:

Rash or hives
Nausea
Stomach pain
Diarrhea
Itchy skin
Shortness of breath
Chest pain
Swelling of the airways to the lungs
Anaphylaxis


What Are the Symptoms of Food Intolerance?
Symptoms of food intolerance include:

Nausea
Stomach pain
Gas, cramps or bloating
Vomiting
Heartburn
Diarrhea
Headaches
Irritability or nervousness
How Common Are Food Allergies and Intolerances?
Food allergies affect in the region of 2 to 4% of adults and 6 to 8% of children. Food intolerances are much more adjectives. In certainty, nearly everyone at one time have have an unpleasant criticism to something they ate. Some nation enjoy specific food intolerances. Lactose intolerance, the most adjectives food intolerance, affects in the order of 10% of Americans.

What Causes Food Allergies and Intolerances?
Food allergies arise from sensitivity to chemical compounds (proteins) in food. They develop after you are exposed to a food protein that your body think is venomous. The first time you chomp through the food containing the protein, your immune system responds by creating specific disease-fighting antibodies (called immunoglobulin E or IgE). When you eat the food again, it triggers the release of IgE antibodies and other chemicals, including histamine, in an hard work to expel the protein "invader" from your body. Histamine is a powerful chemical that can affect the respiratory system, gastrointestinal tract, skin or cardiovascular system.

As a result of this response, allergy symptoms crop up. The allergy symptoms you enjoy depend on where on earth within the body the histamine is released. If it is released in the ears, antenna and throat, you may enjoy an itchy antenna and mouth, or trouble breathing or swallowing. If histamine is released in the skin, you may develop hives or a impetuous. If histamine is released in the gastrointestinal tract, you potential will develop stomach pains, cramps or diarrhea. Many nation experience a combination of symptoms as the food is eat and digested.

Food allergies commonly run within family, suggesting that the condition can be adjectives.

There are plentiful factor that may contribute to food intolerance. In some cases, as near lactose intolerance, the human being lacks the chemicals, call enzymes, compulsory to properly digest trustworthy proteins found in food. Also adjectives are intolerances to some chemical ingredients added to food to provide color, enhance partiality and protect against the growth of germs. These ingredients include a range of dyes and monosodium glutamate (MSG), a flavor enhancer.

Substances call sulfites are also a source of intolerance for some ethnic group. They may go off smoothly, as contained by red wines or may be added to prevent the growth of mold.

Salicylates are a group of plant chemicals found with ease surrounded by tons fruits, vegetables, nuts, coffee, juice, beer and wine. Aspirin also is a compound of the salicylate household. Foods containing salicylates may trigger symptoms in folks who are sensitive to aspirin. Of course, any food consumed in excessive quantity can end in digestive symptoms.
Intolerance expresses itself as allergies. I feel they are same or similar. I own oodles food intolerances. They don't show up as allergies in the sense of cause any impetuous or itching, sneezing etc. but create release of histamine in the stomach cause tang.
there is not a substantial difference between the two, it is how they would show up on test

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