WebMD reports that walnut allergy symptoms can include hives, swollen skin, itching inside the ear and mouth, swollen lips, breathing difficulty, chest pain, difficulty swallowing and confusion. Walnut allergies can also cause abdominal discomfort, nausea and vomiting. Individuals with severe nut allergies should always carry injectable epinephrine to treat symptoms immediately in the event of an emergency.
The Mayo Clinic explains that additional nut allergy symptoms include wheezing, hives and eczema. Nuts can also cause a severe, life-threatening allergic reaction called anaphylaxis. Symptoms of anaphylaxis include rapid pulse rate, shock, fainting and loss of consciousness. It is imperative for individuals experiencing anaphylaxis symptoms to seek immediate medical treatment.
Healthline explains that in addition to avoiding nuts, individuals with nut allergies should also check the ingredient labels on cereals, cold cut meats, cooking oils, nutrition bars and certain alcoholic beverages to ensure that the items do not contain tree nuts and were not processed in a plant that utilizes tree nuts. Nut allergy symptoms can often be treated with over-the-counter antihistamine and decongestant medications as well as cool compresses to relieve skin inflammation. However, it is important for individuals who suspect that they may have a nut allergy to consult with an allergist to ensure proper allergy testing, diagnosis and treatment.