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Doctor insights on: Can A Fever Blister Be Caused By Food Allergies Or Allergies To Something Else

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Can my son's food allergies cause fever?

Can my son's food allergies cause fever?

Not directly: Allergies do not cause fevers but secondary conditions related to allergies can cause fevers such as ear infections that resulted from fluid behind the ear drum that becomes infected. ...Read more

Dr. John Chiu
2,638 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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I ve reaction to so many foods and they all cause me sore throat & flu like symptoms, yet no food allergy has been identified on skin test, any causes?

I ve reaction to so many foods and they all cause me sore throat & flu like symptoms, yet no food allergy has been identified on skin test, any causes?

Not allergy: Need allergy consolation with certified allergist. The hx his most important.
Nedd to be more specific re: time specific other sx and foods. I doubt these sx are
ige mediated '. ...Read more

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Intermittent low fevers and flu like symptoms. Could it be food allergies, candida or possible cancer?

Intermittent low fevers and flu like symptoms. Could it be food allergies, candida or possible cancer?

Fevers: It does not sound like any of the three causes are the cause of your intermittent fevers. You may want to consult a rheumatologist to determine the cause of your fevers. ...Read more

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Why do I always get low grade fever after I eat sweet cheese? I get fever after like half a day. Food allergy? Leaky gut?

Why do I always get low grade fever after I eat sweet cheese? I get fever after like half a day. Food allergy? Leaky gut?

Fever: Although don't know what you mean by low grade, fever is commonly a response to an inflammatory process which causes release of cytokines like tnf or il-2, etc. These stimulate the hypothalamus to reset the body's thermostat. Allergy can do this, but many things are possible. Doubt you have a "leaky gut". Good luck. ...Read more

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My 3 year old had a food allergy for the first time. Doctor gave an oral steroid now he is soaked in sweat no fever is this normal?

My 3 year old had a food allergy for the first time. Doctor gave an oral steroid now he is soaked in sweat no fever is this normal?

Not usual but: Food allergy is not usually treated with steroid. However when the dose is high, it may cause flushing and thus the sweating without fever. Food reactions usually subside in less than a day at best and thus I question the use of steroid unless he had hives which could not be controlled with large dose of antihistamine. ...Read more

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Can I give my 15 month old peptobismol? She keeps throwing up with no signs of fever or illness. We have checked food allergies, ans GERD (taking zantac (ranitidine) 2x daily). I cannot figure out what's wrong :- (

Can I give my 15 month old peptobismol? She keeps throwing up with no signs of fever or illness. We have checked food allergies, ans GERD (taking zantac (ranitidine) 2x daily). I cannot figure out what's wrong :- (

I wouldn't: Pepto has salycilates which we don't give tom kids under 16 because of an association with liver failure/death (Reye syndrome).Wet burps that do not result in problems with hydration often decrease with age as the reflux improves. If the kid is growing well. I would leave it alone. ...Read more

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Two weeks ago I started to get small blisters in my mouth, at first it didn't really hurt, but its getting worse. Could this be a food allergy?

Two weeks ago I started to get small blisters in my mouth, at first it didn't really hurt, but its getting worse. Could this be a food allergy?

Allergy unlikely: Unlikely to be a food allergy; more likely a sensitivity to a toothpaste or mouthwash. Could be viral or bacterial - you should see a dentist to get a proper diagnosis. ...Read more

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I just developed several small blister like lesions on the roof of my mouth after eating something. Could it be a food allergy or something serious?

I just developed several small blister like lesions on the roof of my mouth after eating something. Could it be a food allergy or something serious?

Mouth lesions: This could be a food allergy - also check to see if you were eating hot food - if the food is too hot it will also blister the roof of the mouth. Keep a diary of what food you eat and when this happens. If continues - follow with your physician. ...Read more

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Swollen lips & blisters since 5:45am, saw hospital was given antihistamines and steroids, told POSSIBLE FOOD ALLERGY. Swelling returned it now 10:32pm?

Swollen lips & blisters since 5:45am, saw hospital was given antihistamines and steroids, told POSSIBLE FOOD ALLERGY. Swelling returned it now 10:32pm?

Airway?: Keep in mind the half life of your antihistamine. It is probably wearing off and needs to be redosed. If not improving within an hour of redosing you need to go back to the ER. Cetirizine 10mg will last 24 hours. ...Read more

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Blister on right foot 4th toe, it popped took skin with it, went to dr, he thinks food allergy now have 4 blisters on right hand. Why?

Blister on right foot 4th toe, it popped took skin with it, went to dr, he thinks food allergy now have 4 blisters on right hand. Why?

Contact dermatitis..: Maybe from something you wore or contacted. One blister is usually from heat/friction but many suggests a reaction to something ...Read more

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Could you have a food allergy and a following flu?

They are not related: Food allergy is unrelated to flue symptoms. However, gastrointestinal symptoms such as diarrhea and vomiting may deplete intestinal lactase which will give symptoms of an intolerance to milk, which is sometimes mis diagnosed as an allergy. ...Read more

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I have had a low grade temp for a week now. I am very tired and I have had stomach pain for 7 years including food allergies. It not cold Or or flu.?

I have had a low grade temp for a week now. I am very tired and I have had stomach pain for 7 years including food allergies. It not cold Or or flu.?

7 years?: I think you should consult a GI doctor who may or may not refer you to an allergist depending on his findings. 7 years are a long time to suffer. As for the low-grade temperature, how low grade has it been? ...Read more

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Could zyrtec (cetirizine) stop nausea caused by food allergies?

Could zyrtec (cetirizine) stop nausea caused by food allergies?

No: No zyrtec (cetirizine) would not work in this case. It looks like you have a systemic food allergy reaction and that can be dangerous. You should go see an allergist to confirm the diagnosis and carry an Epinephrine auto-injector in case similar symptoms occur since it can lead to life threatening situation. Good luck. ...Read more

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can chronic gastritis be caused by food allergies and or food sensitivities? Ve been taking omeprazole for long, stil get acidity if stop, thanks

can chronic gastritis be caused by food allergies and or food sensitivities? Ve been taking omeprazole for long, stil get acidity if stop, thanks

No: Food allergies/sensitivities would cause rather more of bowel symptoms not gastric, you may want to see a Gastroenterologist, as probably further studies needed to diagnose the cause of your symptoms, goodluck ...Read more

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Doctor suggested elimination diet to see if symptoms caused by food allergies. Can I eat potatoes on diet? What is your opinion on this form of action?

Doctor suggested elimination diet to see if symptoms caused by food allergies. Can I eat potatoes on diet? What is your opinion on this form of action?

This is a good way: To see if any of your foods are causing your symptoms. You should start by eating what you would normally eat, but eliminate one food for about 1 week and see if the symptoms go away. If not, move on to eliminating a 2nd food...and so on. Potatoes are generally not very allergenic, depending on how they are cooked and what else is added to them. You can do the same trial with them. ...Read more

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Is it true that it true that mastocytic endocolitis mainly caused by food allergies?

Is it true that it true that mastocytic endocolitis mainly caused by food allergies?

May be yes oy no: Its the irritated mastocytes cause the problem can be food, acid, spices try Cromolyn Sodium 800 mg 15 min before meals, drink alkaline water (water alkalizer. Com). ...Read more

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Can eczema be caused by food allergies?

Can eczema be caused by food allergies?

Food Triggers: Evidence to suggest that moderate/severe eczema in early childhood could be worsened by certain foods (usually highly allergenic foods like peanut, tree nuts, milk, eggs, etc.). Food triggers are not usually an issue with adult eczema. If you notice a consistent pattern of worsening eczema with a particular food then by all means avoid it. Skin prick testing better that patch. See Allergist. ...Read more

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Where on the body do rashes caused by food allergies usually occur?

Where on the body do rashes caused by food allergies usually occur?

Varies: All over (urticaria / hives / itchy blotches), or in the creases of the elbows and knees (atopic dermatitis). Dh from gluten senstivity symmetic, upper body. Some of the more mysterious skin diseases may also be caused by food hypersensitivity sometimes. Food allergy is best diagnosed by what happens to a person if they eat the stuff; it can be dangerous and needs respect. Best wishes. ...Read more

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How can you treat stomach pain caused by food allergies?

How can you treat stomach pain caused by food allergies?

Avoid trigger: Currently the only treatment for food allergies is avoidance of the particular food. For an accidental exposure that is mild, an antihistamine may work. For more severe food allergic reactions, Epinephrine is used. If stomach pain is the only symptom, see an allergist who can help distinguish allergy from intolerance. ...Read more

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What would cause an adult in his 50s to develop a food allergy?

What would cause an adult in his 50s to develop a food allergy?

Typical: All adults essentially change their allergies about ever 7 years, so even if you were not not allergic to some food, you can be now. ...Read more

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Can food allergies cause sinusitis?

Can food allergies cause sinusitis?

No: It's not impossible for food allergies to cause nasal inflammation, but it is unusual. It's much more likely to happen in children. If you're talking about a long term, steady chronic sinus problem, then it's not likely a food allergy. Environmental allergies (pollens, dust, etc) commonly cause or worsen sinus problems. ...Read more

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Is my acne caused by a food allergy?

Is my acne caused by a food allergy?

No: It is very well established now that acne is not due to food allergies, but certain bacteria on the skin. There is no need to alter your diet to treat acne. Instead, see a dermatologist for the best advice; this may includes antibiotic creams, other lotions, etc. Enjoy your meals! ...Read more

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Does food allergies cause numbing of the face?

Does food allergies cause numbing of the face?

Unlikely: The common symptoms of food allergies are itching, hives and swelling (mouth, tongue, lips, throat), vomiting, diarrhea and in some cases asthma or anaphylaxis (severe reaction). Numbness suggests involvement of the nerves which is less likely with allergic reactions. ...Read more

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Could food allergies cause irritable children?

Could food allergies cause irritable children?

Yes: Especially in children too young to communicate effectively. Food allergies can manifest as itching, hives, swelling, vomiting and/or diarrhea. Any of these symptoms could lead to being irritable. Similarly, food intolerance syndromes such as lactose intolerance with abdominal pain, gas and diarrhea can also be accompanied by irritability. There are other reasons for being irritable as well. ...Read more

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What causes eczema flare ups if it's not a food allergy in a toddler?

What causes eczema flare ups if it's not a food allergy in a toddler?

Many possibilities: The primary triggers for eczema flare-ups are food exposures, changes in weather/temperature, using the wrong soaps and moisturizers, and environmental allergens (pets, dust mites). ...Read more

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I wanted to know is it only proteins in food that causes food allergies?

I wanted to know is it only proteins in food that causes food allergies?

Yes most of the time: Usually protein in the food causes the food allergies. Protein, meaning the specific part of a food that triggers your immune system. Example:milk allergy may be caused by casein protein in the milk. Allergies to carbohydrate unit of red meats is rare and presents differently. Best be evaluated by an allergist to help you clarify your allergy. ...Read more

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Can food allergies cause vomiting?

Can food allergies cause vomiting?

Yes: Yes they can cause vomiting, abdominal cramps and diarrhea. ...Read more

Dr. Michael Zacharisen
598 Doctors shared insights

Food Allergy (Definition)

Results in a response like diarrhea, vomiting, hives, or anaphylaxis when certain food is eaten. Can also be more subtle and lead to chronic congestion, headaches, ...Read more


Dr. Heidi Fowler
3,535 Doctors shared insights

Nutrition (Definition)

Nutrition is the synergistic combination of nutrients found in food and water that allows the human body to perform all essential ...Read more