Walnut Allergy Symptoms Mouth. Walnuts can show up in baked goods liqueur candy pesto ice cream salad dressings or toppings and trail mixes. Itching or swelling of the mouth tongue or lips Skin reactions eczema hives swelling and redness of the extremities or face. Nut allergies can be severe and even life-threatening. Nut allergy symptoms usually develop rapidly after a person eats or has exposure to nuts.
 Different people also experience these symptoms either immediately after eating walnuts or a few hours later. Tree Nut Allergy Symptoms. An allergic response to certain bacteria in your mouth. The main symptoms are redness swelling and itching in the mouth immediately after contact with certain foods. Itchy mouth or if severe – trouble breathing or swelling. In case there is tingling in the mouth and tongue with swelling of tongue a mouth wash with salt water is beneficial.
There may also be diarrhea and vomiting.
The interior of the mouth and throat can become itchy sore and red. For many the key signs of oral allergy syndrome are swelling and itchiness of the lips mouth tongue and throat immediately after eating certain fruits and vegetables especially when raw. Symptoms of a walnut allergy range from mild to life-threatening. There may be a blotchy pimply or even blistering rash on the lips tongue the inside of the mouth and the soft palate. There may also be diarrhea and vomiting. Allergies to tree nuts like walnuts are one of the most common types of allergies.