Dr Ewan, who sees more than 8,000 people with allergies a year, said most patients with reactions to fruit and vegetables were youngsters.
Symptoms include swelling in the mouth and throat, and breathing difficulties.
ALLERGY OR INTOLERANCE?
- An allergy is when the immune system reacts to a harmless substance such as a food or pollen, as if it isn't safe
- A severe allergy can cause a potentially life threatening shock known as anaphylaxis
- An intolerance does not affect the immune system
- An intolerance is generally not life threatening and the symptoms less severe
- An intolerance is being unable to digest certain foods such as lactose in milk