The signs and symptoms of rice allergies are the same as for other food and pollen allergies. Rice allergies can trigger symptoms that range from the relatively mild to the more potentially serious. Symptoms typically appear within minutes to a few hours after contact with rice protein.

Potential signs and symptoms include:

• Hives and eczema 
• Runny nose or nasal congestion
• Itchy or watery eyes
• Sneezing
• Swelling of the tongue, lips and throat (angioedema)
• Vomiting
• Nausea
• Abdominal cramps
• Diarrhea
• Cough
• Wheezing

Signs and symptoms of a more severe reaction include:

• Difficulty breathing
• Shortness of breath
• Tightness in the chest or throat
• Drop in blood pressure
• Rapid pulse
• Dizziness or lightheadedness
• Fainting

People experiencing any of the signs and symptoms of a rice allergy should seek immediate medical attention to prevent anaphylactic shock, a potentially life-threatening reaction.