Food Allergy

An immune reaction that is triggered by consuming a particular food is called food allergy. Eating even a small amount of that food item can result in symptoms and signs such as tingling or itching in the mouth, hives, swelling of lips, face, or tongue, nasal congestion, breathing problems, nausea, dizziness, etc. The symptoms can be mild or severe and can start within a few minutes to hours after eating the causative food.

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Are blood blisters on my gums that appear after eating due to an allergy?

Query: Hello doctor, I keep getting blood blisters on my gums whenever I eat something. I also get them on eating bananas. They disappear after taking an antihistamine and keep reappearing. I do not have any known allergies. Is this an allergic reaction or anything else? Kindly guide.   Read Full »

Dr. Asma Sajid Shaikh

Answer: Hello, Welcome to I understand your concern and would be happy to help. The majority of blood blisters go away on their own. The ones which do not resolve can be treated with diet modifications and medicines. Check your food's ingredients and avoid foods containing acetic acid or citr...  Read Full »

Are tingling tongue and itchy mouth after eating kiwi a sign of allergy?

Query: Hello doctor,I am a 17-year-old female. I had one kiwi, and it makes my mouth hurt, but it was not too bad, and I liked the flavor. I just managed it. I decided to have two kiwis yesterday, and then my mouth and tongue were tingly and itchy. My stomach was disturbed, and there was a kind of shortnes...  Read Full »

Dr. Amol Kumar Wasudeorao Diwan

Answer: Hello, Welcome to You are right the symptoms you perceived could be because of kiwi allergy. This is called oral allergy syndrome or pollen food syndrome. The raw proteins in fruit or peel of the fruit cause allergic symptoms. It may occur with certain other fruits, also like peaches,...  Read Full »

What is the treatment for severe eczema?

Query: Hello doctor, I have some questions regarding allergies. When I was a kid, I had eczema on my mid-arms. Then it went away. Some years ago, when I was around 22, it came back aggressively on my face, neck, and shoulders. Then I was referred to blood food allergy tests (IgE). A lot of allergens were...  Read Full »

Dr. Dilip Kumar Meena

Answer: Hello, Welcome to, some food can cause urticaria and rarely angioedema like peanut and seafood allergies. But, there is no significance of the test you have mentioned, as that is a very nonspecific kind of test and most of the people who get themselves tested found themselves allerg...  Read Full »

I got a positive IgE RAST test after a negative IgE tested a year ago. What might be the cause?

Query: Hello doctor, My test report was negative in the IgE test a year ago. Now I got a positive IgE RAST for gluten, eggs, peanut butter, and milk. What might be the cause? I have struggled with sinus issues all my life, and currently, I am taking Singular when needed and Benadryl. I was referred to an E...  Read Full »

Dr. Shyam Kalyan. N

Answer: Hello,Welcome to Specific immunoglobulin E (IgE) testing to allergens is not as accurate as skin prick allergy testing. It is possible to have a negative result in one and a positive in another. The factors affecting the result could be the test itself or the reagents and the lab.I sugg...  Read Full »

I have skin rashes, stomach cramps, loose stools and tongue coating. What is the cause?

Query: Hi doctor, I have a question regarding food intolerance/allergies. I have never had a food allergy, as far as I know. However, in May, I experienced severe tooth pain, and a fever. It was an infection in my tooth but I got that cleared from the dentist. A few days later, I experienced tongue-tingli...  Read Full »

Dr. Penchilaprasad Kandikattu

Answer: Hello, Welcome to Toothache may can cause fever if infected. SIBO (small intestinal bacterial overgrowth) or enteric fever may cause coating over the tongue. Irritable bowel syndrome or malabsorption syndrome or food intolerance or obesity may also present like this. Avoid fatty food...  Read Full »

My high acidity gets triggered by certain foods with severe cough and cold. Please help.

Query: Hello doctor, I have a cough and cold, and I am allergic to citric foods like mango, lemon, vinegar, okra, taro roots, and green chili for last 15 to 20 years. High protein food like the yellow part of eggs, potatoes, etc., cause high acidity and my stomach gets jammed. I cannot drink cold water for...  Read Full »

Dr. Muhammad Zubayer Alam

Answer: Hi, Welcome to I can understand your concern. According to your statement, you have been suffering from cough and cold with allergies to citrus foods, high protein foods which can aggravate stomach acidity with burning sensation and rashes with itching of the whole body and not capab...  Read Full »

I developed food allergy to peanut, shellfish and avacado suddenly. Please help.

Query: Hi doctor, I am a 30-year-old male. In the space of two weeks, I developed an allergic reaction to three different foods peanuts, shellfish, and avocado. I never had problems with either of these foods (or any food for that matter) before and this hit me very suddenly. So far the reactions are mild...  Read Full »

Dr. Dheeraj Kumar Jonnalagadda

Answer: Hi, Welcome to First of all, allergic reactions to food are sudden and happen without any prior history. It is very common for people to develop allergies. Yes, it is common to have these kinds of food allergies. Some people have episodic allergies and they subside completely and for...  Read Full »

I am allergic to onion. How to avoid it in my diet?

Query: Hello doctor, Recently I got an allergy profile. It reports an allergy to onion and kidney beans (rajma). So I stopped eating kidney beans. I am finding it difficult to quit onion. The onion profile value is 0.69. What should I do?  Read Full »

Dr. Amol Kumar Wasudeorao Diwan

Answer: Hello, Welcome to From your allergy report (attachment removed to protect the patient's identity), it is obvious that you are allergic to onion. The value of 0.69 suggests mild allergy. Still, you can not guarantee that after exposure, a severe reaction can not occur. A positive aller...  Read Full »

What should be done if a person allergic to egg eat a cake containing egg?

Query: Hello doctor, I have got an egg allergy. I mistakenly ate a cake which contains egg in it. I am having severe stomach pain. What can be done in such a situation? Please suggest any medicine.  Read Full »

Dr. Amol Kumar Wasudeorao Diwan

Answer: Hello, Welcome to First, let me clarify to you that in case of any food or skin allergy, avoidance is the best treatment option. But many times, it is not possible to do so when our food contains some hidden allergens, which cause allergy symptoms, as you said. Egg protein is the comp...  Read Full »

Can peanut butter intake on an airplane cause an allergy threat?

Query: Hi doctor, Is that fine to bring peanut butter (PB) on an airplane? I would like to know the ways that bringing PB on a plane might or might not pose a threat to others? What should you do if you are bringing PB and if you have an allergy and want to keep safe in case someone else brings some on the...  Read Full »

Dr. Shyam Kalyan. N

Answer: Hi, Welcome to You have asked an interesting question. Peanut allergy is one of the most severe food allergies. It can cause itchiness, urticaria, swelling, eczema, sneezing, asthma, abdominal pain, a drop in blood pressure, and cardiac arrest. It may even result in anaphylactic death...  Read Full »

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