What causes allergies?

@asxenon (1441)
Malaysia
August 19, 2010 11:07pm CST
What is actually causing allergies? Some of my family members are allergic to prawns. My brother is the worst case, he can't even smell prawn. If he did, he will sneeze, if he eats, his face will be red and swollen with rashes. If i take prawn, i will sneeze and my eyes gets irritated and i will tend to rub my eyes. Do anyone know what is the cause of this allergies? Is there any cure to it?
3 responses
@Sakura24 (175)
• Philippines
20 Aug 10
I guess it is more like in asthma, First the person will be expose to any allergen like pollens, dusts, sea foods.Mast cells in the body play a major role to this. If some exposed to allergen, allergen binds to Immunoglobulin E (IGE) then mast cells are activated it release granules and chemical mediators like histamine 1 which triggers inflammatory response like redness and swelling. It causes vasodilation or blood vessels dilate so people will have redness in some parts of the body,bronchial constriction or the bronchi in the lungs constrict so there is difficulty breathing;if persist can cause anaphylactic shock. If your brother is allergic to prawns, he should tell the doctor before undergoing some medical procedures that require dye injection like contrast MRI,CT-scan with contrast and angiography. For he may be allergic to iodine. These procedures are contraindicated to him. if he is exposed to allergens and develop allergy, he should at least take ANTIHISTAMINE medications, and if his reaction is worst like he has difficulty breathing when exposed to allergens, then he should consult a doctor so he can prescribe EPINEPHRINE. The most natural is that, he should know what substances that he is allergic to and then STAY AWAY from those as much as possible.
@asxenon (1441)
• Malaysia
20 Aug 10
Thanks for the information. You must be an expert :D
@Sakura24 (175)
• Philippines
20 Aug 10
Not really, it is just my work is in the medical field so I have knowledge with diseases
@p3ks626 (6552)
• Philippines
20 Aug 10
I was suppose to explain something about the IGE or the Immunogloblulin E that causes allergies. Anyway, I think the first respondent made it all clear now. Anyway, I hope your brother will be able get over his allergies.
@asxenon (1441)
• Malaysia
2 Sep 10
Thanks! Is it possible for allergies to heal?
@simonelee (2721)
• China
1 Sep 10
I think we have NURSES here or perhaps studied in a medical school.All your questions are already answered. I'm wondering now if there's a physician who joined mylot. Hmmm.... Anyway, there's a test to identify your allergies(most of the time we are not aware that we have allergies to this and that until it is triggered). Just visit your physician.