What are the symptoms of crayfish allergy?
Disease description:
After recently eating crawfish, I experienced symptoms including itchy skin and swelling, and I am concerned that I may be allergic to crawfish. I would like to know, what specific symptoms can occur with a crawfish allergy?
Doctor's answer (1)
Dr. Liu Wenmin
Shellfish allergy is a type of food allergy that occurs when an individual's immune system mistakenly identifies proteins in shellfish as harmful substances and mounts an exaggerated response. The severity of allergic symptoms varies among individuals, ranging from mild discomfort to potentially life-threatening anaphylactic shock.
Skin symptoms such as redness, itching, and rashes are common manifestations of this allergy. These symptoms occur due to the release of chemicals like histamine by the immune system, which cause blood vessels to dilate and skin tissues to swell. Some allergic individuals may develop respiratory symptoms, including difficulty breathing, wheezing, and chest tightness, and in some cases, allergic asthma may occur. In severe cases, anaphylaxis may develop, which is a medical emergency requiring immediate intervention. Symptoms of anaphylaxis include a sudden drop in blood pressure, rapid pulse, shortness of breath, and loss of consciousness.
If the above symptoms occur, shellfish allergy should be strongly suspected, and immediate medical attention is necessary. Doctors will assess the patient's symptoms and signs and may perform allergen testing to confirm the diagnosis. Once diagnosed, further exposure to shellfish should be avoided, and anti-allergy treatment should be conducted under a doctor's guidance.
