Although some allergies are treated as the child grows, they are often permanent in adults. The worst reactions, e.g., anaphylaxis caused by peanut are generally here to stay. The safest approach to avoid from allergen and be prepared in advance against the exposures that occur accidentally is to carry antihistaminic and adrenalin injections with you. Although immunotherapy may help reduce complaints in some inevitable allergies, it doesn't work for food allergies. It may be required to make injections in food allergies at regular intervals generally for years.