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Doctor insights on: Allergy Vs Intolerance Vs Sensitivity

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What is the difference between milk allergy vs lactose intollerence?

What is the difference between milk allergy vs lactose intollerence?

Good question: An allergy is when your immune system reacts to a substance, causing rashes, wheezing, etc. This can happen with milk and many other foods. Lactose intollerence is caused by a lack of an enzyme needed to digest milk. This typically causes bloating, gas and diarrhea with some cramping. Very different from an allergy. ...Read more

Dr. John Chiu
2,656 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


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What's the difference between an allergy vs chemical sensitivity?

What's the difference between an allergy vs chemical sensitivity?

Immune vs Irritant: An allergic reaction involves the immune system reacting to a specific substance and causing symptoms such as rash, itching, hay fever, or asthma. A chemical sensitivity can be an irritant reaction or toxic reaction that causes direct damage to the skin, respiratory system or gastrointestinal system on contact. ...Read more

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Candida vs. Gluten allergy? What's the difference?

Candida vs. Gluten allergy? What's the difference?

Unrelated: Candida is a common yeast/fungus found in the GI tract and can be a complication of using inhaled steroids for treating asthma. Also can be a cause of vaginitis after treatment with antibiotics. Gluten is a protein found in wheat and other grains that in susceptible people is not digested leading to diarrhea. This is celiac disease and treated by eliminating gluten from the diet. ...Read more

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What is the difference in symptoms of dairy allergy vs. Dairy intolerance?

What is the difference in symptoms of dairy allergy vs. Dairy intolerance?

Allergy not just GI: Dairy intolerance is caused by an inability to digest milk sugar lactose into two simpler sugars. This results in gas, cramps, bloating, flatulence & diarrhea. Dairy allergy may cause these same symptoms but typically also causes vomiting, skin rashes like hives or eczema & even triggers allergic rhinitis & asthma. If symptoms all GI try lactose-free milk. You'll have no symptoms if intolerant. ...Read more

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What is the best food allergy, sensitivity or intolerance test?

What is the best food allergy, sensitivity or intolerance test?

Avoidance &challenge: Every test out there is imperfect. This is because there are many different mechanisms of food sensitivities- some mediated by igg, e, a & m antibodies, some by lymphocytes, some by inability to digest (lactose), some by inability to metabolize (nightshades) and there aren't tests for all of these. Avoiding suspect foods for 5 days to 1 month & challenging to see if you react is still the best test! ...Read more

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Is a cross-sensitivity chocolate/almond allergy possible?

Is a cross-sensitivity chocolate/almond allergy possible?

Sort of: Most "grocery check out isle" chocolate is contaminated with peanut and tree nuts like almond, because it is packaged in the same factory. So if you buy plain chocolate you may still get exposure to almond. ...Read more

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What is an allergy compared to intolerance?

What is an allergy compared to intolerance?

Immune system: Allergy is caused by an immune response (usually IgE) to a foreign agent- usually a protein. Intolerance is not mediated by an immune system but something unique to that person. Some may be psychological in nature ...Read more

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Wheat intolerence and gluten intolerence, is there a difference?

Wheat intolerence and gluten intolerence, is there a difference?

Wheat and Gluten: Gluten is a protein found in wheat, barley, and rye. You could possibly have a reaction to wheat, but not other gluten- containing grains. The exact meaning of "Intolerance" is not clear, so I can't be certain what you mean by that. ...Read more

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What is celiac disease in children vs wheat allergy?

What is celiac disease in children vs wheat allergy?

Probably same: An allergy may give you more symptoms but celiac usually attacks the digestive tract. ...Read more

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Difference between lactose intolerance and milk allergy?

Difference between lactose intolerance and milk allergy?

Milk issues: Milk allergy causes hives, swelling of soft tissues such as lips and tongue, shortness of breath and in extreme cases anaphylactic reactions, it may also cause severe abdominal cramps. The effects are immediate after milk ingestion. While lactose intolerance can cause gas and bloating 1-2 hours after ingestion of dairy products and sometimes diarrhea. ...Read more

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Peanut vs hazelnut allergy--same cause?

Nuts are different: Peanuts and hazelnuts are not the same. Peanuts are a legume and hazelnuts are tree nuts. If you are allergic to one, you will not necessarily be allergic to the other, but if you have several food allergies involving nuts, hazelnut and peanut should both be part of your skin test or blood test evaluation ...Read more

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What is the difference between a gluten allergy and a gluten intolerance?

Wording issues: You will be intolerant to gluten if you are allergic to it.Your body will have reactions to it and many could be severe. Allergy skin tests and blood tests would be positive. You could be intolerant to gluten but not have typical allergic reactions (hives, difficulty breathing, positive skin and blood tests), but you might have indigestion, constant bloating, intermittent diarrhea, etc. ...Read more

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Tomato allergy or intolerance possible?

Tomato allergy or intolerance possible?

Yes: Both are possible. You can get an ige blood test to see if you are allergic. It is available from immunocap at quest labs. Intolerance is often related to the acid content of tomatoes. ...Read more

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What makes a milk allergy different from intolerance?

What makes a milk allergy different from intolerance?

Lactose intolerance: True milk allergy is ige mediated and involves - hives, wheezing, skin rashes, anaphylaxis. Milk intolerance - most notably - lactose intolerance, is associated with loose bowel movements, abdominal cramps and gas, is due to a deficiency of the enzyme lactase. ...Read more

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Is a food allergy similar to or different from contact hypersensitivity reactions?

Different: They are both immune reactions but the similarity ends there. They involve different cells of the immune system, have different symptoms, onset and duration and are treated differently. ...Read more

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Are there differences in cheese vs milk intolerance?

Are there differences in cheese vs milk intolerance?

Milk: Sometimes. If both bother you you have a cows milk or dairy intolerance. Sometimes one can eat exotic cheeses without problems with this disorder since the preperation of the cheese may change or denature the part of the milk you are allergic to thus rendering the product safe. Sometimes boiling milk will do the same. There are many proteins and components to milk that you could be allergic to so. ...Read more

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Is rashes usually a symptom of celiac disease/gluten intolerance or a wheat allergy?

Is rashes usually a symptom of celiac disease/gluten intolerance or a wheat allergy?

DH: Dermatitis herpetiformis is an extremely itchy rash made of bumps and blisters. The rash is chronic, which means it continues over a long period of time. Dermatitis herpetiformis usually begins in people age 20 and older, although children may sometimes be affected. It is seen in both men and women. The cause is unknown. However, dermatitis herpetiformis is frequently linked to gluten sensitivity. ...Read more

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What's the difference between lactose intolerance and milk allergy?

What's the difference between lactose intolerance and milk allergy?

Big difference: In lactose intolerance the small intestine can't digest lactose into glucose & galactose. These 2 sugars but not lactose can be absorbed. If lactose reaches the large intestine bacteria break it down to lactic & co2. Lactic acid causes diarrhea. Co2 is a gas causing bloating, cramps &...Well, gas. Allergy involves the immune system with symptoms like hives, eczema, asthma, vomiting & anaphylaxis. ...Read more

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