The duration of a food allergy reaction can vary depending on the individual and the severity of the allergy. In general, a mild to moderate food allergy reaction can last anywhere from a few hours to a few days. Symptoms typically start within a few minutes to a few hours after consuming the allergen and can include hives, itching, swelling, stomach pain, vomiting, or diarrhea.

For some people with severe food allergies, the reaction can be more severe and potentially life-threatening. This type of reaction is known as anaphylaxis and requires immediate medical attention. Anaphylaxis can progress rapidly and can cause symptoms such as difficulty breathing, a drop in blood pressure, and loss of consciousness. If left untreated, anaphylaxis can be fatal.

The duration of an anaphylactic reaction can vary, but in general, the symptoms can last for several hours. After receiving treatment with epinephrine and other medications, the symptoms usually start to improve, but it is important for the individual to be monitored closely to ensure that the reaction does not worsen.

It is important for individuals with food allergies to be prepared for a potential reaction by carrying an epinephrine auto-injector and having an emergency action plan in place. If you suspect that you or someone else is having a food allergy reaction, it is important to seek medical attention immediately.

In conclusion, the duration of a food allergy reaction can vary depending on the severity of the allergy and the individual’s response to the allergen. Mild to moderate reactions can last for a few hours to a few days, while severe reactions such as anaphylaxis can last for several hours and require immediate medical attention. It is important for individuals with food allergies to be informed about the signs and symptoms of an allergic reaction and to take necessary precautions to prevent and manage reactions effectively.