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Oral allergy syndrome (OAS) or pollen-food allergy syndrome (PFAS) is a type of allergy classified by a cluster of allergic reactions in the mouth and throat in response to eating certain (usually fresh) fruits, nuts, and vegetables. It typically develops in adults with hay fever. [1] It is not usually serious. [2]
According to the Mayo Clinic, “Allergy symptoms, which depend on the substance involved, can affect your airways, sinuses and nasal passages, skin, and digestive system.” [5] The severity of the following symptoms varies from child to child. [5] The symptoms of indoor and outdoor allergies in children may include: [18] [19] Runny nose
Food protein-induced enterocolitis syndrome (FPIES) is a systemic, non IgE-mediated food allergy to a specific trigger within food, most likely food protein.In its acute form, FPIES presents with vomiting that typically begins 1 to 4 hours after trigger food ingestion, alongside paleness of the skin, lethargy, and potentially blood-tinged diarrhea.
Treating allergy symptoms with over-the-counter medication, saline spray, and, if warranted, allergy medication or injections from your doctor, may also help reduce GI symptoms as a result.
A food allergy is an abnormal immune response to food.The symptoms of the allergic reaction may range from mild to severe. They may include itchiness, swelling of the tongue, vomiting, diarrhea, hives, trouble breathing, or low blood pressure.
In an early analysis of data from a clinical trial backed by the National Institute of Allergy and Infectious Diseases, 165 children and adolescents who received injections of the drug Xolair were ...
For example, people allergic to birch pollen may also find that they have an allergic reaction to the skin of apples or potatoes. [23] A clear sign of this is the occurrence of an itchy throat after eating an apple or sneezing when peeling potatoes or apples. This occurs because of similarities in the proteins of the pollen and the food. [24]
An allergen is an otherwise harmless substance that triggers an allergic reaction in sensitive individuals by stimulating an immune response.. In technical terms, an allergen is an antigen that is capable of stimulating a type-I hypersensitivity reaction in atopic individuals through immunoglobulin E (IgE) responses. [1]