A 37-year-old male asked:
Disclaimer

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 doctor answers
Dr. Matt Wachsman
35 years experience Internal Medicine
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.
Answered on Apr 12, 2016
1
1 thank
Dr. J. Lawrence Dohan
56 years experience Dermatology
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.
Answered on Apr 12, 2016
1
1 thank

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
$10/month

Related questions:

A 21-year-old female asked:
Dr. Gabriel Niles
15 years experience Family Medicine
Food sensitivities: Blood tests are often inaccurate with regards to allergies, intolerances, and sensitivities. The best way to confirm a problem with these foods is to ... Read More
1
1 thank
A 23-year-old female asked:
Dr. James Ferguson
45 years experience Pediatrics
Zantac not issue: There are e basic tests of food allergy/intolerance. A blood test that looks at antibodies to foods (helps identify dangerous items). The pin prick th ... Read More
1
1 thank
A 40-year-old member asked:
Dr. Efren Rael
17 years experience Allergy and Immunology
Food allergy & skin: The most common relationship between food allergy and the skin are hives (marked by raised red bumps that are red and itchy that occur quickly and res ... Read More
A 40-year-old female asked:
Dr. Joram Seggev
Specializes in Allergy and Immunology
Hives - not allergy: Prick skin tests are helpful if positive and the patient has a history suggestive of allergy. They are insufficient to make a diagnosis of food allerg ... Read More
1
1 thank

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
$10/month