Skin Reactions
It's common for people with soy allergy to have skin reactions such as hives or eczema upon exposure to soy. These are red, itchy, and sometimes painful rashes that typically appear within minutes to hours after eating or touching soy products.
Gastrointestinal Issues
Symptoms like nausea, vomiting, abdominal pain and diarrhea often occur as a result of the body's reaction to soy proteins. These can be an immediate reaction, or may not appear until hours later, making them harder to associate with specific foods.
Respiratory Symptoms
Individuals may experience respiratory symptoms like wheezing, difficulty breathing, nasal congestion and a runny or stuffy nose. Severe reactions can result in anaphylaxis, a life-threatening condition that needs immediate medical attention.
Oral Allergy Syndrome
This condition involves an allergic reaction to certain proteins in a variety of fruits, vegetables and nuts. It can cause symptoms in the mouth and throat such as itching, irritation, swelling, and difficulty swallowing.
Tingling in the Mouth
Upon ingestion of soy, some individuals may feel a sense of numbness or tingling in their mouth. This sensation can also manifest as a slight swelling of the lips or tongue.
Drop in Blood Pressure
In severe cases, a person with a soy allergy might experience a significant drop in blood pressure shortly after eating a soy product. This can lead to symptoms like dizziness, lightheadedness, and potentially fainting.
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