Skin rashes and itching are common allergic reactions to peanut butter. According to the Mayo Clinic, reactions to peanut butter can happen within minutes after eating this food. Sometimes it takes longer for reactions to occur. Skin reactions like redness, rashes, or swelling are often the first signs of peanut allergy.
Some people feel itching or tingling in or around their mouth and throat
Another possible allergic reaction to peanut butter is when there is itching around the mouth and face. There may be a tingling sensation inside the mouth and throat. This could be the sign of a very serious reaction called anaphylaxis. This is a whole-body reaction that must be treated within minutes. It is life-threatening and should be treated as a medical emergency.
Tightening of the throat and trouble breathing are other possible reactions
If a person begins to feel as if their throat is swollen and tightening, or that they are having trouble breathing, this is also a sign that anaphylaxis may be occurring. The person needs to get to the emergency room as quickly as possible. There is a chance that the throat could become so swollen that they cannot breathe. Peanut allergy symptoms like this should be taken very seriously.
Shortness of breath or wheezing
A person who is allergic to peanuts may begin to feel as if they cannot catch their breath. They are short of breath and may begin wheezing. This should also be taken seriously if the person has recently eaten peanut butter. Wheezing is often a sign of asthma, and the child or adult could experience a serious asthma attack as an allergic reaction to peanuts.
Runny nose or sniffling can also be a sign of a peanut allergy
Usually, when a person begins to have a runny nose after eating peanuts, the allergy to this food is much milder. It should still be reported to the doctor, however, and peanuts should be avoided until allergy testing is completed.