2 doctors weighed in:

Can you develop an allergic reaction from eating certain type of food within 3 days of eating it even if the skin prick patch test is negative for that food?

2 doctors weighed in
Dr. J. Lawrence Dohan
Dermatology

In brief: Details matter

What do you mean by "allergic reaction"? Food allergies proceed through igE and manifest as URTICARIA, mostly HIVES.
If you have a rash or eczema it is not due to food. Skin tests of any kind are notoriously unreliable for food allergies. Why were these tests done? They are usually useless and should never be done if the patient has eczema.

In brief: Details matter

What do you mean by "allergic reaction"? Food allergies proceed through igE and manifest as URTICARIA, mostly HIVES.
If you have a rash or eczema it is not due to food. Skin tests of any kind are notoriously unreliable for food allergies. Why were these tests done? They are usually useless and should never be done if the patient has eczema.
Dr. J. Lawrence Dohan
Dr. J. Lawrence Dohan
Thank
Dr. Matt Wachsman
Internal Medicine

In brief: Allergy is an immune

response.
It has to develop AFTER exposure. The skin test is quite reliable, but does not prevent later development of allergy AFTER a negative test. Furthermore, foods are rarely just the food they say it is. Rice is low allergenicity. SAFFRON, artificial colors, various seasonings .. more likely to give allergic responses. So, can have a negative test, same food, difrerent additives.

In brief: Allergy is an immune

response.
It has to develop AFTER exposure. The skin test is quite reliable, but does not prevent later development of allergy AFTER a negative test. Furthermore, foods are rarely just the food they say it is. Rice is low allergenicity. SAFFRON, artificial colors, various seasonings .. more likely to give allergic responses. So, can have a negative test, same food, difrerent additives.
Dr. Matt Wachsman
Dr. Matt Wachsman
Thank
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