Signs and symptoms of seafood allergy anaphylaxis include:
Throat swelling or tightness in the throat (airway constriction) making breathing difficult
- Shock with a severe drop in blood pressure
- Fast pulse
- Dizziness, lightheadedness or unconsciousness
You may experience other symptoms not mentioned. If you have any questions about symptoms, consult your doctor.
When do you need to see a doctor?
See a doctor or allergist if you have symptoms of a food allergy shortly after eating. Seek emergency treatment if you develop signs or symptoms of anaphylaxis.
What causes seafood allergy?
All food allergies are caused by an overreaction of the immune system. The immune system considers a protein from seafood (including shellfish or mollusks) harmful, leading to the production of antibodies to that protein (allergen). The next time you are exposed to allergens, your immune system releases histamine and other chemicals that cause allergy symptoms.
What factors increase the risk of seafood allergy?
You are at risk of developing a seafood allergy if someone in your family has it. In addition, while allergies can appear at any age, this allergy is more common in adults, especially women. In children, seafood allergy is more common in boys.