Signs and symptoms
... For most people, an adverse reaction to a particular food is uncomfortable. But, for some people, a food reaction can be frightening and even life-threatening. Symptoms of a food allergy usually devel...

Causes
... In a true food allergy, your immune system mistakenly identifies a specific food or component of food as a harmful substance. Your immune system triggers certain cells to produce immunoglobulin E (IgE...

Risk factors
... Certain factors may put you at greater risk of developing a food allergy: Family history. You''re at increased risk of food allergies if other allergies, such as hay fever, asthma, hives or eczema, ar...

When to seek medical advice
... See a doctor or allergist if you experience food allergy symptoms shortly after eating. If possible, see your doctor when the allergic reaction is occurring. This will aid in making a diagnosis. Seek ...

Screening and diagnosis
... The following may help determine if you have a true food allergy, rather than a food intolerance, food poisoning or some other gastrointestinal condition. Description of your symptoms. Be prepared to ...