Gaano po katagal bago mawala ang pamamaga ng balat o pamamantal from food allergy?

I've had allergies since I was a kid. Based on experience, the longest period before mawala pantal ko sa katawan was a little over a week. Dinala na ako sa hospital for injection since hindi nadala sa oral medication.

According to this article, it can take up 14 to 28 days para mawala yung dermatitis or rashes brought by allergies. https://www.aaaai.org/conditions-and-treatments/library/at-a-glance/allergic-skin-conditions