Peanut allergy

Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
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Peanut allergy
Synonyms	N/A
Pronounce	N/A
Specialty	N/A
Symptoms	Hives, swelling, anaphylaxis
Complications	N/A
Onset	Minutes to hours after exposure
Duration	Variable
Types	N/A
Causes	Immune system reaction to peanut proteins
Risks	Family history, atopic dermatitis
Diagnosis	Skin prick test, blood test for IgE
Differential diagnosis	Tree nut allergy, food intolerance
Prevention	Avoidance of peanuts
Treatment	Epinephrine, antihistamines, corticosteroids
Medication	N/A
Prognosis	N/A
Frequency	~1-2% of the population
Deaths	Rare, but possible due to anaphylaxis

Peanut Allergy: An Overview

Peanut allergy is one of the most common food allergies, characterized by an overreaction of the immune system to proteins found in peanuts. Peanut allergy affects a significant portion of the population, particularly in Western countries. Due to the potential severity of allergic reactions, which can include anaphylaxis, understanding and managing this condition is of paramount importance.

Symptoms of Peanut Allergy

The range of symptoms caused by peanut allergies.

The symptoms of a peanut allergy can range from mild to severe and may include itching, swelling, eczema, stomach cramps, diarrhea, and in extreme cases, anaphylaxis. Symptoms typically appear within minutes to a few hours after consuming or coming into contact with peanuts.

Causes and Risk Factors

The exact cause of peanut allergy is unknown, but it involves the immune system mistakenly identifying peanut proteins as harmful. Risk factors for developing a peanut allergy include family history, age (it is more common in children), and the presence of other allergic conditions such as atopic dermatitis.

Diagnosis

Diagnosis typically involves a combination of a medical history review, dietary review, skin prick tests, blood tests for specific antibodies, and/or an oral food challenge conducted by an allergy specialist.

Management

There is currently no cure for peanut allergies, so management is focused on avoidance of peanuts and peanut-containing products, education on reading food labels, and preparation for accidental exposures. Individuals with a peanut allergy should carry epinephrine auto-injectors in case of severe reactions.

Avoidance Strategies

Avoidance requires careful attention to food labels, communication with food handlers when dining out, and awareness of cross-contact possibilities during food preparation.

Emergency Treatment

In the event of an allergic reaction, immediate administration of epinephrine and seeking emergency medical help is crucial.

Research and Future Directions

Ongoing research is aimed at understanding the causes of peanut allergy and developing treatments such as oral immunotherapy (OIT), which involves administering controlled amounts of peanut protein under medical supervision to build tolerance.

• Dailymed label info on Peanut allergy
• FDA Peanut allergy