Clinical manifestations of peanut allergy are miscellanous extending from simple itching to anaphylactic shock. They may appear early in life. The diagnosis relies upon history, prick tests, specific IgE dosage, and if necessary oral challenge test. Most often peanut allergy is longstanding requiring a complete exclusion of peanut from the food. In addition peanut oil being a frequent hidden allergen, it is recommended that any patient with recognized peanut allergy carries a first aid kit to be used in case of allergic accident.