Symptoms of a delayed food allergy do not appear until hours or even days after the triggering food has been consumed. As a result of this delayed reaction, it is often difficult to determine whether a certain food is associated with a certain symptom. Due to this, it is difficult to determine what is causing the complaints. A blood test for IgG antibodies can provide certainty in this case. Following such results, one must adjust his or her diet accordingly. Additionally, provocation testing with positive allergens should always be conducted before making a change in diet to confirm the IgG results. Food protein-induced enterocolitis syndrome (FPIES) is another delayed food allergy reaction that can occur two to six hours after consuming milk, soy, certain grains, and other solid foods. Food allergy rashes can appear suddenly and cause discomfort when not addressed. Get the healthcare treatment you need today! Food allergy rash treatments are available at Fast Aid Urgent Care. For more information, contact us or schedule an appointment online. We serve patients from Bulverde Rd San Antonio TX, Windcrest TX, Selma TX, Bastrop TX, Paige TX, Smithville TX, Alamo Ranch San Antonio TX, Leon Valley TX, Helotes TX, La Grange TX, Rabbs Prairie TX, Halsted TX, Leon Springs TX, Fair Oaks Ranch TX, Cross Mountain TX, New Braunfels TX, Hunter TX, Zorn TX, Potranco Road San Antonio TX, Rio Medina TX, Rolling Oaks Estates TX, Dripping Springs, TX, Saddletree Ranch TX, and Belterra TX.