An allergic response to peanuts usually occurs within minutes after exposure. Peanut allergy signs and symptoms can include: 
Skin reactions, such as hives, redness or swelling
Itching or tingling in or around the mouth and throat
Digestive problems, such as diarrhea, stomach cramps, nausea or vomiting
Tightening of the throat
Shortness of breath or wheezing
Runny nose
 Anaphylaxis: A life-threatening reaction Peanut allergy is the most common cause of food-induced anaphylaxis, a medical emergency that requires treatment with an epinephrine (adrenaline) autoinjector (EpiPen, Auvi-Q, others) and a trip to the emergency room. Anaphylaxis signs and symptoms can include: 
Constriction of airways
Swelling of the throat that makes it difficult to breathe
A severe drop in blood pressure (shock)
Rapid pulse
Dizziness, lightheadedness or loss of consciousness
