Top
20
Doctor insights on: Allergies And Intolerances

Share
1

1
What is the difference between allergy and intolerance?

What is the difference between allergy and intolerance?

The immune response: An allergy is caused by specific cells and/or proteins in the body that are designed to recognize specific sites in the allergen, i.e. Peanut, walnut, cat dander, etc. These include immunoglobulin e, and t and b cells. An intolerance is caused by an inability to digest a sugar or protein, but does not involve the same immunoglobulins and cells. ...Read more

See 3 more doctor answers
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


2

2
How common is an allergy or intolerance to nightshade vegetables/foods? What are the typical symptoms?

How common is an allergy or intolerance to nightshade vegetables/foods? What are the typical symptoms?

Fairly: Allergy is likely rare but intolerance likely fairly common. Allergy to foods in the nightshades family in not that different from other allergy allergies although anaphylaxis must be very rare. As for intolerance, it can be almost anything with different people having different symptoms to a certain food. ...Read more

3

3
What's the difference between a food allergy and intolerance?

What's the difference between a food allergy and intolerance?

Intolerance subset: Food allergy (fa) is a subset of food intolerance (fi). Fa involves an abnormal immune system reaction to an otherwise innocuous food. Mechanisms of fi include inability to digest a food as in lactose intolerance. Fa can be life-threatening; fi is not. Symptoms of fi are limited to the GI tract - pain, bloat, gas, vomiting, diarrhea. Fa symptoms may be GI as well as respiratory, skin & cardiac. ...Read more

See 1 more doctor answer
4

4
Can there be any test to diagnose a suspected food allergy or intolerance?

Can there be any test to diagnose a suspected food allergy or intolerance?

Yes and not really: Food allergy is diagnosed by assessing the history (in the context of symptoms), and either allergy skin test or specific ige blood test. These are especially helpful in confirming a patient does not have food allergy if test is negative. Sometimes a food challenge is performed to really assess if the food allergy is present. Lactose intolerance can be diagnosed with a breath hydrogen test. ...Read more

5

5
I want to know what is the difference between food allergy and intolerance?

I want to know what is the difference between food allergy and intolerance?

IgE vs non-IgE: True food allergy is mediated by the ige antibody and can be tested for by skin testing or blood ige. Symptoms can be severe and only a small amount needed to cause a reaction. Intolerance are almost always GI symptoms (pain, diarrhea, etc) and have negative ige blood and skin tests. Small amounts of food may be tolerated but a "threshold dose" above which symptoms will occur. ...Read more

6

6
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

7

7
Advice on having food allergies or intolerances?

Advice on having food allergies or intolerances?

Food allergies: Food intolerance is more common than food allergies. 90% of all true food allergies are caused by 8 different foods. Allergists are your best resource for food allergy information. For more food allergy facts, go to my blog at: http://www.Familyallergyasthmacare.Com/2013/11/did-you-know-facts-about-food-allergies-in-the-u-s/. ...Read more

See 1 more doctor answer
8

8
How to tell if it's a chicken allergy or intolerance?

How to tell if it's a chicken allergy or intolerance?

Symptoms and test: Chicken meat allergy is either uncommon or under reported. Intolerance symptoms are GI with nausea, abdominal pain, gassiness and diarrhea. A chicken skin test would be negative. True allergy (ige) symptoms are hives, wheezing, anaphylaxis and can include GI symptoms. A skin test would be negative. An allergist can assist in helping you determine if allergy or intolerance. ...Read more

9

9
What are common symptoms of allergy or intolerance to wheat (not celiac disease)? How is allergy/intol determined - thru testing or elimination diet?

Intolerance/immune: Intolerance consists of any undesired effects from from wheat and there is no definite test for it (other than a double-blind food challenge). Allergy to wheat often affects the guts but may cause hives, swelling, nasal congestion, and even rarely anaphylaxis. Allergy can be detected by skin testing or allergy blood test but double-blind food challenge remains the gold standard. ...Read more

10

10
Can geographic tongue be a food allergy or intolerance?

Can geographic tongue be a food allergy or intolerance?

No: This is also known as benign migratory glositis, and its cause is unknown. It is something your born with. Foods do not cause this, nor is it the same as an allergic reaction. Certain food can cause pain when you have an exacerbation. Avoid spicy foods, and vinegar based salad dressings, for instance. ...Read more

See 1 more doctor answer
11

11
Is nausea after eating be a food allergy or intolerance?

Is nausea after eating be a food allergy or intolerance?

See a Doctor: There are many causes of nausea and food allergy could be one of the them. If one is experiencing nausea then an evaluation by one's pcp is needed. ...Read more

See 1 more doctor answer
12

12
Are allergy drops or allergy shots available for treatment of food allergy/ or intolerance or are they only 4 treating environmental allergens ?

Are allergy drops or allergy shots available for treatment of food allergy/ or intolerance or are they only 4 treating environmental allergens

?

Food allergy: Allergy drops and shots are now only administered for environmental allergies. There is ongoing research on treating food allergies with oral immunotherapy. ...Read more

14

14
Can geographic tongue be caused by a food allergy or intolerance, such as celiac disease? Or lactose intolerance?

Can geographic tongue be caused by a food allergy or intolerance, such as celiac disease? Or lactose intolerance?

YES!: Although it is not always associated with those things, a high percentage of patients with celiac disease also have geographic tongue. It is not know why there is a correlation, but the correlation exists! if you have not been checked for celiac disease, ibs, or other gastrointestinal/autoimmune disorder, you may want to see your physician. ...Read more

See 2 more doctor answers
17

17
Reason for itchy nipple aside from detergent allergy or intolerance and pregnancy?

Reason for itchy nipple aside from detergent allergy or intolerance and pregnancy?

Strange: I've never heard of nipple or areolar pruritus before, especially unilaterally. If there are signs of inflammation present, you can apply some low potency hydrocortisone cream sparingly to the affected area and see if it resolves. Pregnancy shouldn't cause this symptom. Don't scratch it. Don't let your boyfriend suck your nipples. He's too old to be doing that. ...Read more

19

19
Day after i drink alcohol i wake up with crusty eyes and sore fingers. Could this allergy or intolerance? If so what's in booze to cause this?

Day after i drink alcohol i wake up with crusty eyes and sore fingers. Could this allergy or intolerance? If so what's in booze to cause this?

Not likely allergy: While allergy to a component of alcohol can happen, it is exceedingly rare. Food allergies also cause very specific symptoms in an immediate manner. You likely are experiencing effects of dehydration and "hangover.". ...Read more

Dr. James Fox Dr. Fox
1 doctor agreed:
20

20
Wheat flour if inhaled gives me asthma, if i eat it i get seizures and sometimes go unconscious in 30 mins, itchy skin if i touch.Allergy or intolerance?

Dr. James Fox Dr. Fox
1 doctor agreed:
Wheat flour if inhaled gives me asthma, if i eat it i get seizures and sometimes go unconscious in 30 mins, itchy skin if i touch.Allergy or intolerance?

Allergy most likely: Although testing via a blood test (rast-type) is needed to confirm the allergy, your symptoms are most likely due to an ige antibody to wheat. Skin testing would be a bit risky. Strict avoidance and access to self-injected Epinephrine (epi-pen or auviq) would be required if allergy is confirmed. ...Read more

See 1 more doctor answer