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Doctor insights on: Allergic Reactions To Contrast Dye

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What’s the dye used in angiography? I’ve tried researching online, but can’t find an answer. I’m allergic to a lot of things, and i’m afraid I might have a bad reaction to the dye/contrast medium. How can I find out?

What’s the dye used in angiography? I’ve tried researching online, but can’t find an answer. I’m allergic to a lot of things, and i’m afraid I might have a bad reaction to the dye/contrast medium. How can I find out?

Different dyes used: Ask your cardiologist or radiologist who is performing the procedure and ask what dye is going to be used. There are different classes of rcm and they are classified according to their tonicity. The isoosmolar reagents are the least likely to result in reactions. Let your physician know your concerns and they will walk you through the options. ...Read more

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Allergic reaction to the contrast dye for cat scan?

Allergic reaction to the contrast dye for cat scan?

See below: Allergic reaction to ct scan contrast may range from mild skin rash and itching to severe skin rash and cardiac arrest. Patients at risk are those with previous adverse reactions to iodine-based contrast materials, history of asthma, history of allergy. Contrast reaction may be reduced or prevented if appropriately treated before the scan, but this is not 100%. ...Read more

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Is there an allergy testing for contrast dye. I'm allergic to shellfish. Thanks?

Is there an allergy testing for contrast dye. I'm allergic to shellfish. Thanks?

Unrelated: There is a common misunderstanding that one can be allergic to iodine yet this is incompatible with life -our thyroid hormone production depends on it.
You are allergic to the muscle protein in shellfish and not to the iodine. The contrast dye reaction is from the molecular structure of the dye which releases histamine. You are not at higher risk for a dye reaction because of a shellfish allergy ...Read more

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I'm proned 2 allergic reactions but never a reaction to tattoo/hair dye. I just got a tattoo & hair dyed on same day (diff. Colors) will this harm me?

I'm proned 2 allergic reactions but never a reaction to tattoo/hair dye. I just got a tattoo & hair dyed on same day (diff. Colors) will this harm me?

No: If you are not allergic to the tattoo pigments or hair dye, you are at no higher risk in developing an allergic reaction to these two unrelated products. ...Read more

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Allergic reaction to MRI dye? I am very allergic to all sorts of things, so I'm a bit paranoid about getting an MRI done. Do you know if it's common to have an allergic reaction to MRI dye? If so, what type of bad reactions do people have? Is there a way

Acute : Acute allergic reactions to MRI contrast material ("dye") are rare, occuring in less than 0.1% of injections. Most reactions are mild, for example a rash, itching, or nasal stuffiness. However, some reactions are moderate or severe and require immediate medical management. Moderate reactions include shortness of breath, increased or decreased heart rate, or increased or decreased blood pressure. Severe reactions include respiratory distress, abnormal heart rhythm, seizure, or cardiopulmonary arrest. A radiologist, who is a physician who specializes in diagnostic imaging, is always available near the scanner to manage contrast reactions.

There is no way to know ahead of time if you will have an allergic reaction to the dye. Potential factors that may increase your risk of an acute allergic reaction include a history of previous allergic reaction to iv-administered contrast medium (either gadolinium-containing, which is used for mri, or iodine-containing, which is used for ct), a prior allergic reaction to a substance other than contrast media, or a history of asthma. If your risk for a severe reaction is high, for example if you had a severe reaction in the past, your doctor may offer you steroids as premedication before the scan. ...Read more

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What happens if you get an allergic reaction to the contrast dye for CT scan?

What happens if you get an allergic reaction to the contrast dye for CT scan?

See below: With iodinated based contrast you may get allergic reaction ranging from mild skin rash to severe rash, difficult breathing, severe drop in blood pressure and even cardiac arrest. Patients at risk are those with previous reaction, history of asthma or allergy. Please consult with your doctor. ...Read more

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Do artificial dyes(Red 40, Blue 1) cause allergic reactions such as swelling in throat just as natural dyes that come from plants do?

Do artificial dyes(Red 40, Blue 1) cause allergic reactions such as swelling in throat just as natural dyes that come from plants do?

Food dye allergy?: Potentially serious reactions have been reported with a variety of food dyes (also labelled as "food coloring"). However, food dyes are so ubiquitous in foods that it's difficult to make a verifiable association without allergy testing. If you are concerned, you should try to avoid those of concern and consult an allergist to conduct specific testing. ...Read more

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If I've had contrast CTPA scan before with no allergic reaction- what's the chances of me having a reaction with another CT scan with dye?

If I've had contrast CTPA scan before with no allergic reaction- what's the chances of me having a reaction with another CT scan with dye?

Low: Considering your body has been exposed to the contrast with no reaction, it is unlikely the same or similar contrast will bring any reaction. Nonetheless, speak with your doctor about your concerns so they can prepare and answer your questions thoroughly. Good luck. ...Read more

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I'm allergic to the contrast dye, but could a CT scan still detect bladder cancer?

I'm allergic to the contrast dye, but could a CT scan still detect bladder cancer?

Maybe: Although ct scans are an excellent radiographic study, they can easily miss small bladder masses. If one should have a very large bladder mass, it will likely be seen. However, a cystoscopy is still required because the mass seen on ct scan does not neccessarily mean cancer. A tissue diagnosis with a biopsy is still required to make the definitive diagnosis. ...Read more

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I have true allergy to Benadryl (diphenhydramine) (had hives when taking the dye-free for a headache.) is allegra safe for me? And would it help my allergic reactions?

I have true allergy to Benadryl (diphenhydramine) (had hives when taking the dye-free for a headache.) is allegra safe for me? And would it help my allergic reactions?

Yes: Allergy to Benadryl (diphenhydramine) is rare if at all present. Allegra is quite different from Benadryl (diphenhydramine) in structure and thus should be safe for you. Make sure you are not allergic to the gelatin on the Benadryl (diphenhydramine) capsules. Whether Allegra would work for you or not is another issue but it should be no less effective than benadryl (diphenhydramine). ...Read more

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Does contrast dye stay in your body?

Does contrast dye stay in your body?

No: Hydrate well after the IV contrast and it will be flushed out by the kidneys,. ...Read more

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How long does contrast dye last in your body?

Contrast: This really depends on where it is placed and used. Time will vary based on this. ...Read more

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How long does contrast dye stay in your system?

How long does contrast dye stay in your system?

Depends: The rate of clearance (or excretion) depends on the renal function of the patient. In patients with normal kidney function, 50% of the injected dose will be excreted at one hour, ~83% at three hours, and almost 100% at 24 hours. ...Read more

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Is it uncommon to have an allergy to contrast dye?

Is it uncommon to have an allergy to contrast dye?

Contrast dye: Constrast dye reactions are now less common than when iodine was used in dyes. It is idiosyncratic, meaning there are no predictors for it, but can happen unsuspected. ...Read more

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Can you have reactions to the dyes in synthroid (thyroxine)?

Can you have reactions to the dyes in synthroid (thyroxine)?

Possible: It is possible to be allergic to the dye in medications. That is why someone may react to one dose but not another with a different color. However, this is unusual. ...Read more

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I'm allergic to dye for my beard, is there another way to dye my beard?

I'm allergic to dye for my beard, is there another way to dye my beard?

Patch Test: Dye reactions are most likely contact dermatitis. One could get patch testing done to determine the chemical that is causing the reaction and then use products that do not contain that chemical. ...Read more

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What are the signs that you are allergic to hair dye?

Itchy scalp rash.: Allergy to chemicals found in hair coloring would typically be first noticed as an itchy red rash on the scalp or hairline. It is a condition called contact dermatitis. Blistering may occur. The face, neck, and eyelids may also be involved. Some people might get red swelling, such as hives in these areas as well. Diagnosis would involve a chemical patch test by an allergist or dermatologist. ...Read more

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If someone is allergic to Iodine, is there a strong possibility they are allergic to IV dye as well?

If someone is allergic to Iodine, is there a strong possibility they are allergic to IV dye as well?

Short Ans is MAYBE: When you say IV contrast dye the word IODINE likely comes up in many minds. In other words, if we were on MEDICAL FAMILY FEUD & Richard Dawson were to say, "Name the top 5 chemicals contained in IV DYE" Well, first you'd ask to see the guy's driver's license since Dawson's been dead for a while now. Second, you'd realize that Iodine is only ONE TYPE of IV dye but it's still good to check. Cheers! ...Read more

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If I have never had a reaction to home hair dye should I worry about one? Can i suddenly become allergic?

If I have never had a reaction to home hair dye should I worry about one? Can i suddenly become allergic?

Hair Dye: The culprit is a common chemical ingredient in permanent hair dyes, called para-phenylenediamine, or ppd. Ppd is found in more than two-thirds of commercial dyes, the researchers say, including many of the top-selling brands.
Patients with severe PPD reactions commonly develop painful rashes around the hair line or on the face, which often require treatment and can lead to hospitalization. ...Read more

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Was administered contrast dye for an echo. Shortly after, felt very flushed and chest got heavy. Notified nurse, who wasn't concerned. Poss. Reaction?

Was administered contrast dye for an echo. Shortly after, felt very flushed and chest got heavy. Notified nurse, who wasn't concerned. Poss. Reaction?

Some reactions: To contrast dyes are quite normal and expected, which may be why the nurse seemed unconcerned. If you are fine now then it wasn't a very serious reaction and is over. If you have any lingering symptoms or concerns, consult the doctor who ordered the study. ...Read more

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Have you use CO2 in your practice and has the outcome been just as good as contrast dye. Do contrast dye need to be used to confirm patency afterwards?

Have you use CO2 in your practice and has the outcome been just as good as contrast dye. Do contrast dye need to be used to confirm patency afterwards?

CO2 contrast: Understand you are asking about CO2 angiography as an alternate to contrast dye-angiography. It is reported to result in images that are somewhat lower in quality. Patency demonstrated via CO2 angiogram would not need to be confirmed with dye — the reason to use CO2 is lost if it is followed by infusion of dye! ...Read more

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What could have caused me to be allergic to hair dye?

What could have caused me to be allergic to hair dye?

PPD: The most common allergy in hair dye is para-phenylenediamine (ppd). Interestingly, this allergy can also be seen in patients with a sulfa allergy. Some people just become allergic. ...Read more

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Is it possible to only be allergic to red dye #40 while I'm pregnant?

Is it possible to only be allergic to red dye #40 while I'm pregnant?

Unlikely: If you have a true IgE-mediated allergy to red dye then it will persist whether you are pregnant or not. Furthermore, red dye (and other dye) allergies are rare. Sometimes people can develop intolerances to certain additives that are not life threatening. See an allergist to determine if you have a true food allergy or just an intolerance/sensitivity as management of these conditions is different. ...Read more

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Is there any way to do a lung angiogram without contrast dyes?

Is there any way to do a lung angiogram without contrast dyes?

Lung vasculature: Unfortunately in order to visualize the blood vessels there needs to be some type of contrast agent used. Some newer agents are better tolerated than the older ones, but doing a lung angiogram is an invasive procedure and should only be done when necessary. ...Read more

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Can MRI contrast dye have side effects?

Can MRI contrast dye have side effects?

Yes but rare: Mri contrast can have side effects but they are extremely rare. Contrast side effects are more common with ct. ...Read more

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Allergic to hair dye, how do I make the symptoms go away?

Allergic to hair dye, how do I make the symptoms go away?

Avoidance: Avoidance is the only answer. For the acute situation, a potent topical cortisone lotion or spray (by rx) would be the answer. ...Read more

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What can I do if I had an allergic to hair dye? How to make the symptoms go away?

What can I do if I had an allergic to hair dye? How to make the symptoms go away?

Challenging: Contact dermatitis to p-phenylene diamine is one of the most common allergies to hair dye. Symptoms are usually a red itchy rash that persists sometimes up to a month. Avoidance is the most effective treatment, allergy patch testing can confirm. Sometimes, treatment can require oral prednisone, but this has potential side effects. Some can get allergy to preservatives in topical corticosteroids ...Read more

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Can blue dye, such as fd&c blue no. 2, cause an allergic reaction such as swelling?

Can blue dye, such as fd&c blue no. 2, cause an allergic reaction such as swelling?

Possibly: I suspect the answer is yes. 11 patients with chronic, unexplained itchy skin rashes that responded to medication changes centered around avoidance of coloring agents, fd&c blue no. 1 (bright blue) and blue no. 2 (indigo carmine). Reactions to agents that color medications and foods may be more common than previously appreciated. This is from journal of drugs dermatol. 2013;12(1):99-102. ...Read more