17 doctors weighed in:
How do you know if you have a ketchup allergy?
17 doctors weighed in

Dr. Barbara Stark Baxter
Internal Medicine - Allergy & Immunology
16 doctors agree
In brief: Allergic symptoms
Symptoms of food allergies can range from itching of the lips, tongue, palate or throat to GI upset with nausea, vomiting, cramping, bloating, or diarrhea, to headache, nasal congestion, runny nose, itchy eyes, puffy eyes, itchy ears, itchy skin, hives, rashes, to cough, asthma, flushing, shock or rarely, joint pains.
One could be tested to components like tomato, or do a prick test w/the food.

In brief: Allergic symptoms
Symptoms of food allergies can range from itching of the lips, tongue, palate or throat to GI upset with nausea, vomiting, cramping, bloating, or diarrhea, to headache, nasal congestion, runny nose, itchy eyes, puffy eyes, itchy ears, itchy skin, hives, rashes, to cough, asthma, flushing, shock or rarely, joint pains.
One could be tested to components like tomato, or do a prick test w/the food.
Dr. Barbara Stark Baxter
Dr. Barbara Stark Baxter
Thank
Get help from a real doctor now
Dr. Adam Smith
Board Certified, Internal Medicine
13 years in practice
382K people helped
Continue
108,000 doctors available
Read more answers from doctors