Im Allergic

I know that with an allergy your body releases histimine because the food product you ate is considered a ‘foreign’ or ‘bad’ product. (Histimine 1 deals with above the neck, histimine 2 deals with the stomach releasing excess acid)… With food intollerance, what kind of symptoms/signs do you have? Is it just having gas problems?
oh, and with allergies one might have problems with hives, swelling, difficulty breathing, etc

From web MD.

What Is a Food Allergy?
A food allergy is an immune system response. It occurs when the body mistakes an ingredient in food — usually a protein — as harmful and creates a defense system (antibodies) to fight it. Allergy symptoms develop when the antibodies are battling the "invading" food. The most common 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 rather than an immune system response. It occurs when something in a food irritates a person’s digestive system or when a person is unable to properly digest or breakdown, the food. Intolerance to lactose, which is found in milk and other dairy products, is the most common food intolerance.

What Are the Symptoms of Food Allergy?
Symptoms of a food allergy can range from mild to severe, and the amount of food necessary to trigger a reaction varies from person to person. 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

I have always had really bad allergies to cats but I love them so much so it is really hard to have allergies. I am a wreck if I am in a house that has/had a cat(s).
I heard that there is treatment with allergy shots over a 3 year period but there are no guarantees that it will work and it would cost me about $1200 in total to do.
Do you think it is worth it? How high is the success rate?

It takes about 5 yrs worth of shots to get rid of allergies. They have studied and found that after 5 yrs, the shots don’t do any good.

Well,the title pretty much gives it away lol.But,anyway,might be allergic to a food or two,but I’m curious about something.If after testing,they are sure you have an allergy to something,what do they do about it?(Food allergies,not things like allergies to grass etc.).Do they just tell you not to eat it anymore or what?Just curious.Thanks everyone.Peace.

DOc—it hurts when I do this…
Doc: Well don’t do that!

there are elimination diets that can help you learn what you are allergic to-
then basically stop eating it-

You can do this without a doctor telling you…