Guest guest Posted October 17, 2006 Report Share Posted October 17, 2006 , You wrote: > > > My sister is so allergic to iodine that she cannot eat seafood. So in > her case [and I'm sure others] the allergy is not to radiological dyes. There are basically two types of contrast agents used in X-ray examinations, those based on barium sulfate and those based on iodine. If your sister is allergic to iodine in seafood, she will almost certainly react badly to iodine based contrast agents. Make sure she lets the radiographers know about her sensitivity prior to any procedure involving X-rays. Iodine in contrast agents may be bound either in an organic (non-ionic) compound or an ionic compound. Allergic folks tend to react to BOTH. Ionic agents are the older of the two types, although still in wide use despite their side effects. Organic compounds have fewer side effects, since they do not dissociate. Examples include iohexol, iodixanol, ioversol. These are clear colorless water solutions, which can be used almost anywhere in the body, e.g. intravenously, intraarterially, intrathecally (the spine) and intraabdominally - in just about any body cavity or potential space. Allergy to iodine contrast agents can cause anaphylactoid reactions, but they can also attack just the kidneys in contrast-induced nephropathy. Anaphylactoid reactions are similar to anaphylactic reactions, but are not caused by an IgE-mediated immune response. Pretreatment with corticosteroids can decrease the incidence of adverse reactions. This is what they tried with my friend, but it nearly killed him. Chuck Quote Link to comment Share on other sites More sharing options...
Guest guest Posted October 18, 2006 Report Share Posted October 18, 2006 this is wrong. Being allergic to seafood is not an iodine allergy, and the iodine dyes are organic/not inorganic. We all need iodine to live. Allergy to the kind of iodine the body uses is very rare, it would be like being allergic to iron or calcium. Gracia , You wrote: > > > My sister is so allergic to iodine that she cannot eat seafood. So in > her case [and I'm sure others] the allergy is not to radiological dyes. There are basically two types of contrast agents used in X-ray examinations, those based on barium sulfate and those based on iodine. If your sister is allergic to iodine in seafood, she will almost certainly react badly to iodine based contrast agents. Make sure she lets the radiographers know about her sensitivity prior to any procedure involving X-rays. Iodine in contrast agents may be bound either in an organic (non-ionic) compound or an ionic compound. Allergic folks tend to react to BOTH. Ionic agents are the older of the two types, although still in wide use despite their side effects. Organic compounds have fewer side effects, since they do not dissociate. Examples include iohexol, iodixanol, ioversol. These are clear colorless water solutions, which can be used almost anywhere in the body, e.g. intravenously, intraarterially, intrathecally (the spine) and intraabdominally - in just about any body cavity or potential space. Allergy to iodine contrast agents can cause anaphylactoid reactions, but they can also attack just the kidneys in contrast-induced nephropathy. Anaphylactoid reactions are similar to anaphylactic reactions, but are not caused by an IgE-mediated immune response. Pretreatment with corticosteroids can decrease the incidence of adverse reactions. This is what they tried with my friend, but it nearly killed him. Chuck ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.4/478 - Release Date: 10/17/2006 ---------- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.4/478 - Release Date: 10/17/2006 Quote Link to comment Share on other sites More sharing options...
Guest guest Posted October 18, 2006 Report Share Posted October 18, 2006 Thanks for the clarification. I'm sure my sister would let everyone know of her iodine allergy, unless she happened to be unconscious... [ggg] Iodine allergy <hypothyroidism/message/26023;_ylc=X3oDMTJxaTVmbTE\ 5BF9TAzk3MzU5NzE1BGdycElkAzE0NTY2NARncnBzcElkAzE3MDkyNTEwODIEbXNnSWQDMjYwMjMEc2V\ jA2Rtc2cEc2xrA3Ztc2cEc3RpbWUDMTE2MTE4MzgyOQ--> Posted by: " Chuck B " gumboyaya@... <mailto:gumboyaya@...?Subject=Re:%20Iodine%20allergy> gumbo482001 <gumbo482001> Tue Oct 17, 2006 1:03 pm (PST) , You wrote: > > > My sister is so allergic to iodine that she cannot eat seafood. So in > her case [and I'm sure others] the allergy is not to radiological dyes. There are basically two types of contrast agents used in X-ray examinations, those based on barium sulfate and those based on iodine. If your sister is allergic to iodine in seafood, she will almost certainly react badly to iodine based contrast agents. Make sure she lets the radiographers know about her sensitivity prior to any procedure involving X-rays. Iodine in contrast agents may be bound either in an organic (non-ionic) compound or an ionic compound. Allergic folks tend to react to BOTH. Ionic agents are the older of the two types, although still in wide use despite their side effects. Organic compounds have fewer side effects, since they do not dissociate. Examples include iohexol, iodixanol, ioversol. These are clear colorless water solutions, which can be used almost anywhere in the body, e.g. intravenously, intraarterially, intrathecally (the spine) and intraabdominally - in just about any body cavity or potential space. Allergy to iodine contrast agents can cause anaphylactoid reactions, but they can also attack just the kidneys in contrast-induced nephropathy. Anaphylactoid reactions are similar to anaphylactic reactions, but are not caused by an IgE-mediated immune response. Pretreatment with corticosteroids can decrease the incidence of adverse reactions. This is what they tried with my friend, but it nearly killed him. Chuck Quote Link to comment Share on other sites More sharing options...
Guest guest Posted October 19, 2006 Report Share Posted October 19, 2006 Gracia, You wrote: > > I wonder why they use that stuff? Allergy to inorganic iodine is > extremely rare. I would not call 5-8% extremely rare. That's according to Shehadi WH, Toniolo G. Adverse reactions to contrast media. Radiology 1980;137:299-302. Medline http://www.jcaai.org/PP/anaph_15_reactions.asp Chuck Quote Link to comment Share on other sites More sharing options...
Guest guest Posted October 20, 2006 Report Share Posted October 20, 2006 Gracia wrote: > > > > the thing to realize is that this reaction is to the kind of iodine used > in the dyes (which is organic) as opposed to the kind of iodine our > bodies use (which is inorganic). No it is not. The inorganic iodine (or iodide) react with proteins in the victim, making an allergen out of the person's own chemistry. Inorganic iodine (I2) or iodide ion, thus _become_ organic as soon as they are taken internally. The distinction is rather moot except to indicate that the iodine is not already compounded with some other molecule, which might be even more problematic. People that react to iodide contrast agents will typically be even more sensitive to high molality dyes, but that is simply because the concentration of elemental iodine in them is higher. The source form is largely immaterial. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve & db=PubMed & list_uids=1\ 5206582 & dopt=Abstract Chuck Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 3, 2008 Report Share Posted March 3, 2008 I am also interested in seeing an answer to this question. Anyone? Marla > > Hi , > > > > What are the symptoms if someone is allergic to taking Iodoral? Thanks > > > > Joni > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 4, 2008 Report Share Posted March 4, 2008 Hi! According to DrBrownstein, you put iodine on your arm. If it swallow or itch after a while, you are alergic Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 4, 2008 Report Share Posted March 4, 2008 D wrote: Hi! According to DrBrownstein, you put iodine on your arm. If it swallow or itch after a while, you are alergic What do you mean if it swallow??? neysa Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 4, 2008 Report Share Posted March 4, 2008 I think it is supposed to say if it is hard to swallow or you itch. Steph Re: Re: Iodine allergy D wrote: Hi! According to DrBrownstein, you put iodine on your arm. If it swallow or itch after a while, you are alergic What do you mean if it swallow???neysa Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 5, 2008 Report Share Posted March 5, 2008 Not swallow, swell instead , not exactly the same Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.