Doctor insights on:
Allergies And Intolerances
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 moreSee 3 more doctor answers
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
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
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 moreSee 1 more doctor answer
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
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
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 moreSee 1 more doctor answer
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
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
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 moreSee 1 more doctor answer
Snake oil: Even the best skin and blood tests for allergies fail to correlate 100% with a persons actual response to the agent tested. The hair test ranks among the least dependable at predicting anything. I would save my money & buy a good diary. By listing your actual responses to certain foods or other agents you are aware of you have an accurate idea of things you should avoid. ...Read more
Are allergy drops or allergy shots available for treatment of food allergy/ or intolerance or are they only 4 treating environmental allergens
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 moreSee 2 more doctor answers
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
If eating foods with wheat gives one nasal congestion & headache & edema but celiac testing is negative, is that a wheat allergy or intolerance?
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 moreSee 1 more doctor answer
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