Aug 24, 2024 · A food allergy can cause: Tingling in the mouth. Swelling of the lips, tongue, face or throat. Itchy welts called hives. Stuffy nose, sneezing or teary eyes that itch. Stomach cramps, vomiting or diarrhea. Anaphylaxis. An insect sting allergy can cause: Pain and a large area of swelling called edema at the sting site. Itching or hives all over ...

Jun 14, 2023 · People reporting a penicillin allergy have their allergy designation removed with allergy testing more than 90% of the time. Find out who should be tested and what to expect. By Adela Taylor December 7, 2022

Aug 4, 2021 · Pet allergy is an allergic reaction to proteins found in an animal's skin cells, saliva or urine. Signs of pet allergy include those common to hay fever, such as sneezing and runny nose. Some people may also experience signs of asthma, such as wheezing and difficulty breathing.

Nov 9, 2024 · A drug allergy is the reaction of the immune system to a medicine. Any medicine — over-the-counter, prescription or herbal — can trigger a drug allergy. However, a drug allergy is more likely with certain medicines. The most common symptoms of drug allergy are hives, rash and fever. But a drug allergy also may cause serious reactions.

Aug 30, 2024 · Food allergy is an immune system reaction that happens soon after eating a certain food. Even a tiny amount of the allergy-causing food can trigger symptoms such as hives, swollen airways and digestive problems. In some people, a food allergy can cause severe symptoms or even a life-threatening reaction known as anaphylaxis.

Mar 28, 2025 · Some allergy medicines can cause confusion, urinary tract symptoms or other side effects in older adults. Your allergy medicine isn't working. Bring the medicine with you in its original bottle or package when you see your healthcare professional. Keep track of your symptoms. Note when you use your medicines and how much you take.

Apr 20, 2023 · The most common form of skin testing involves pricking, or scratching, or an injection to expose the skin to a suspected allergy-causing substance. If a raised, red bump develops at one of the pricks, it indicates a likely allergy. Sometimes another form of skin testing, called patch testing, is used to help diagnose skin allergies.

Jan 26, 2024 · Cold symptoms take a few days to appear after an infection. Allergy symptoms can begin immediately after contact with triggers. Colds tend to last anywhere from three to 14 days. Allergies can last days to months. Cough often is present with a cold and sometimes with allergies. Fatigue is sometimes present with both colds and allergies.

Jan 26, 2024 · An allergy is the body's immune response to a substance in the environment that typically is harmless to most people. The immune system produces antibodies that identify the particular allergen as harmful, even though it isn't, which can cause reactions ranging from minor irritation to severe allergic reactions.

Apr 16, 2025 · Besides allergy to peanuts, nuts, fish, sesame and shellfish, anaphylaxis triggers in adults include: Certain medications, including antibiotics, aspirin and other pain relievers available without a prescription, and the intravenous (IV) contrast used in some imaging tests