Some types of food allergies among children resolve with age, including that to milk, eggs, and soy; while others such as to nuts and shellfish typically do not.In the developed world, about 4% to 8% of people have at least one food allergy. They are more common in children than adults and appear to be increasing in frequency. Male children appear to be more commonly affected than females. Some allergies more commonly develop early in life, while others typically develop in later life. In developed countries, more people believe they have food allergies when they actually do not have them. Signs and symptoms
Food allergy symptoms occur within minutes to hours after exposure and may include:
Rash
Hives
Itching of mouth, lips, tongue, throat, eyes, skin, or other areas
Swelling (angioedema) of lips, tongue, eyelids, or the whole face
Difficulty swallowing
Runny or congested nose
Hoarse voice
Wheezing and/or shortness of breath
Diarrhea, abdominal pain, and/or stomach cramps
Lightheadedness
Fainting
Nausea
VomitingIn some cases, however, onset of symptoms may be delayed for hours.Symptoms can vary. The amount of food needed to trigger a reaction also varies.Serious danger regarding allergies can begin when the respiratory tract or blood circulation is affected. The former can be indicated through wheezing and cyanosis. Poor blood circulation leads to a weak pulse, pale skin and fainting.A severe case of an allergic reaction, caused by symptoms affecting the respiratory tract and blood circulation, is called anaphylaxis. When symptoms are related to a drop in blood pressure, the person is said to be in anaphylactic shock.
Hereditary benign intraepithelial dyskeratosis is a rare autosomal dominant disease of the conjunctiva and the oral mucosa caused by a duplication of chromosome 4q35. In the mouth it appears similar to white sponge nevus, with painless, diffuse, folded and spongy white plaques. In the eye it appears as gelatinous plaques on bulbar perilimbal conjunctiva. == References ==