Find out what you can do about sudden spring allergies or food allergies, and when it's time to get an allergy test. But it is possible to acquire seasonal allergies, food allergies , or other types of allergies as an adult with no prior history of them, says W.
Allergic reactions happen when the body comes into contact with a specific substance, such as a food or an airborne particle, that it mistakenly identifies as harmful. Your body then produces antibodies called immunoglobulin E, or IgE, that attach themselves to certain cells, causing the cells to release a chemical called histamine. The histamine in turn causes inflammation, producing classic seasonal allergy symptoms, like red, watery eyes, and itching. Severe reactions to environmental and food allergies can cause a drop in blood pressure, and anaphylactic shock may occur.
But in about one in five people, too much IgE is misdirected against an allergen rather than something harmful. The first step is to avoid the things you are allergic to and try over-the-counter antihistamines. Allergies can be unpleasant no matter how old you are, but your doctor can help you determine what is triggering your allergies and develop a treatment plan that works for you.
Learn more about Allergy and Immunology services. UPMC in north central Pa. It starts with our primary care physicians , here to listen and lean on for your everyday health. For more specialized care, many of our programs have earned national recognition for quality and safety.
From breast health to heart health , relieving joint pain to conquering cancer, you can count on our expertise when you need it. Share this on: For those who suffer from seasonal allergies, you know that this time of year can be a challenge.
Never Miss a Beat! Tap Click to Join! I understand that I may opt out of receiving such communications at any time. Thank you for subscribing! It is not clear why, but some adults develop an allergy to a food they typically eat with no problem.
Sometimes a child outgrows a food allergy, but that's less likely to happen with adults. The most common foods that cause food allergy in adults are peanuts, fish, shellfish shrimp or lobster and tree nuts almonds, walnuts, pecans and cashews. If you have a food allergy, you'll need to avoid the offending food. An allergic reaction can quickly put your immune system into a state of emergency, affecting numerous organs in your body. For certain people, even a tiny amount of the food may cause signs and symptoms such as digestive problems, hives, facial swelling or trouble breathing.
Some people with a food allergy are at risk of a life-threatening reaction anaphylaxis that requires emergency treatment. Don't ignore a reaction that occurs shortly after eating a particular food. See your doctor to determine the cause of your symptoms. Even if you've had a relatively mild reaction in the past, subsequent allergic reactions may be more serious.
Get emergency treatment for any severe food reaction. James T C Li, M. There is a problem with information submitted for this request. Sign up for free, and stay up-to-date on research advancements, health tips and current health topics, like COVID, plus expert advice on managing your health.
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