Allergy is a sensitive reaction of human body. Which happen due to intake of some product internally and the unusual signs of which appear externally. These signs can be vomiting, nausea, reeling of head and sometimes the person gets red or blue patches.
Allergy can happen from any food. It depends on the physical composition of the body or depends on how his body reacts to the product. Usually egg, milk, fruits, grain and fish cause allergy. But apart from these it can happen by a number of factors.
Sometimes people can get allergic reaction by having liquid. A girl recently told in a survey that whenever she has colddrinks she gets allergy. It lead to irritation and boils over her body. Some scented flowers, dust particles,smell of petrol or kerosene may also lead to allergy.
The agents which cause allergy are called allergen. Once they enter in our body they cause chemical reaction and produce histamine and serotonin which lead to unusual body temperature, problem in respiration, skin rashes etc.
Allergic reaction can happen at a very fast rate and at slow rate. It depend on body sensitivity. For example a highly sensitive person may have allergic signs within few hours than a person having low sensitivity.
As per recent researches allergy can also be hereditary. For example if a mother has sensitivity to eggs, then there are 60% chances that the children will have allergy to eggs.
To treat allergy it is important to know the clinical history of the person. Plus we should keep a list of food habit of the person and the body reaction after consuming those food has to be observed.By comparing this we can get to know the cause of allergy. This can take few months to 2-3 years. To ascertain the allergen few test are recommended.
In one test the skin id slightly scratched and then the doctor put few drops of the allergen and after 30 mintues the effects are observed.
In another test the allergen injection is given to the patient and then it is observe if that particular area has red patches. If yes then that particular food product should be avoided by the person.
Actually allergy is not a disease , it just require a little observation so that we can avoid food and other elements that may cause allergy to us.