A tree nut refers to nuts like almonds, cashews, walnuts and other nuts that grow on trees. The Mayo Clinic indicates that due to the severity of tree nut allergies, the Food and Drug Administration (FDA) requires all food labels to include indication of allergen contents. This requirement is not extended to include foods manufactured in facilities with the presence of allergens but some companies do list a warning voluntarily. Symptoms of a tree nut allergy can vary from mild to severe.
Mild Symptoms
It is possible to experience mild allergy symptoms from either consuming or inhaling the smallest particles of tree nuts. An individual may react to tree nuts just by smelling them, but the symptoms may be mild. Examples of mild allergy include itching of the throat, sneezing, runny nose, watery eyes, hives on the skin, itching of the skin, eczema or swelling of the skin. An individual may experience more severe skin reactions from handling tree nuts.
Moderate Symptoms
More uncomfortable signs of tree nut allergy can occur from consumption or contact with tree nuts. These symptoms can include diarrhea, vomiting, stomach pain, nausea, itching around the mouth, wheezing, trouble breathing and/or rapid heartbeat. Individuals with asthma may suffer an acute attack. KidsHealth.org points out that some children may lose consciousness from an allergic reaction. These more moderate symptoms can occur rapidly or the allergic reaction may be a bit more delayed. The exact time before a reaction occurs differs from person to person.
Severe Symptoms
The University of Michigan indicates that tree allergies can produce an anaphylactic reaction. Symptoms of this very serious allergic reaction include swelling of the mouth, swelling of the throat, an extreme drop in blood pressure, constriction of the airways causing breathing problems and even a blue discoloration of the skin. The onset of anaphylactic shock can be sudden and severe and requires emergency medical attention. Individuals may lose consciousness from the attack. The University of Michigan also points out that the allergic reaction can result in death if it is not treated quickly.
