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Doctor insights on: Allergic Reaction To Mri Contrast Dye

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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

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

Dr. Tanya Russo
5 Doctors shared insights

Mri (Definition)

Mri or magnetic resonance imaging is one of the more recently developed imaging modalities available to physicians. It uses powerful magnets to generate images. There is no ionizing radiation which is a major advantage over many other modalities. Mri is the best imaging exam that we have for most soft tissue and joint related problems. There are radiologists ...Read more


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Is it unusual to have severe allergic reaction to the MRI dye?

Is it unusual to have severe allergic reaction to the MRI dye?

Very rare: Mri "dye" is gadolinium, a rare element that has rare side effects. Allergic reactions are very unusual and vary in frequency from 0.004% to 0.7%. A rash, hives, or urticaria are the most frequent. Severe, life-threatening anaphylactoid or nonallergic anaphylactic reactions are exceedingly rare (0.001% to 0.01%). ...Read more

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Had an allergic reaction to MRI contrast (face got swollen) Hoe do I prevent that from happening again?

Had an allergic reaction to MRI contrast (face got swollen) Hoe do I prevent that from happening again?

If possible,: Perform the MRI without contrast or have your doctor consider alternative tests. If avoidance is not an option, and the contrast is necessary, most facilities will have a pre-treatment regimen consisting of a steroid and possibly other medications to minimize the chance of a reaction. ...Read more

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Vomited immediately when contrast was administered for an mri. Should I consider this an allergic reaction?

Vomited immediately when contrast was administered for an mri. Should I consider this an allergic reaction?

Adverse reaction: Adverse reaction to contrast does not equal an allergic reaction! Adverse reactions also termed nonidiosyncratic reactions are dose-dependent, systemic adverse reactions to contrast material including nausea and vomiting, a metallic taste in the mouth, and generalized warmth or flushing. These reactions are usually nonlife-threatening, self-limited problems. ...Read more

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What can be done in advance of an MRI to ensure the contrast does not cause an allergic reaction? Is there any way to be extra cautious or do a test?

What can be done in advance of an MRI to ensure the contrast does not cause an allergic reaction? Is there any way to be extra cautious or do a test?

MRI = very safe: No need to do anything in advance. The incidence of true reaction to MRI contrast is on the order of 1 in 10, 000 or less. If your kidney function is decreased for any reason, the radiologist may choose not to give contrast to prevent a rare complication called nsf, but it has nothing to do with allergy. ...Read more

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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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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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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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Prone to allergic reactions to meds. Having an mra w/contrast soon. Never had bad reaction from MRI contrasts before, but more allergies now. Concern?

Prone to allergic reactions to meds. Having an mra w/contrast soon. Never had bad reaction from MRI contrasts before, but more allergies now. Concern?

Gadolinium contrast: Allergy is very rare: according to this,

http://www. Medicalnewstoday. Com/releases/92774.Php

there were 54 reactions to over 78000 injections reported, almost all mild. ...Read more

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I've been having dizzy spells (two bad ones). Had an MRI done. No stroke issues. Deep breathing helps after the spell. Could it be allergic reaction?

I've been having dizzy spells (two bad ones). Had an MRI done. No stroke issues. Deep breathing helps after the spell. Could it be allergic reaction?

Diizzy: There are many causes including eye, ear, neck, migraines. Start by haviing a good check up with your doctor. If normla then see a neurologist ...Read more

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What can I do if I had an allergic reaction to hair dye?

What can I do if I had an allergic reaction to hair dye?

Put health before: Perception of beauty. Listen to your body. Avoid any future use of that product. ...Read more

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I just had an allergic reaction to hair dye! Please help?

I just had an allergic reaction to hair dye! Please help?

Derm: Very potent topical steroids can help calm the rash, but as the hair dye washes away this reaction will subside. You can get patch tested to PPD to confirm that hair dye is the problem. ...Read more

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How much time does a allergic reaction to hair dye take to occur?

How much time does a allergic reaction to hair dye take to occur?

24-96 hours: Contact reactions to hair dye are similar to that of poison ivy although the distribution is usually limited to the scalp, neck, shoulders and sometimes upper chest. It falls under the category of a type IV hypersensitivity reaction. This is different than a reaction to pollen or pets which cause immediate symptoms (minutes to a few hours) called a type I reaction. It appears in 24-96 hours. ...Read more

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I had an allergic reaction to my hair dye so they said next time they'd do a weave with foils. Is that ok?

I had an allergic reaction to my hair dye so they said next time they'd do a weave with foils. Is that ok?

Hair dye allergy: You should see an md to see whether you had an irritant or allergic reaction and if allergic you should have patch testing to determine which chemical is causing the reaction. The most common hair dye allergy is to a chemical called PPD and there are hair dyes without ppd. Consulting an allergy or dermatology specialist is your best bet. ...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

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How can I reduce swelling of face due to hair dye allergic reaction?

How can I reduce swelling of face due to hair dye allergic reaction?

Topical steroid: Try otc Hydrocortisone cream. However if the swelling is severe enough, your doctor may need to try you on a short course of oral cortisone as well. Avoidance will be the key in the future. ...Read more

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What are the chances of having a severe allergic reaction to the cat scan dye they use?  

Low: Severe reactions to ct scan dyes are low unless you have a history of a reaction, are on certain medications that work through your kidneys or you are very dehydrated. It is always good to questions why you need the ct scan in the first place as it also exposes you to more radiation. Will the results of the scan change how you are treated? . And that can outweigh the small risks of the procedure. ...Read more

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Hi I got treated at my ER last night for allergic reaction to hair dye and it's comes back today what should I do?

Hi I got treated at my ER last night for allergic reaction to hair dye and it's comes back today what should I do?

Allergic Reaction: I'm not sure what your treatment entailed last night. Hopefully, they gave you instructions for continued treatment. If they did not, then you need to return for care either to your regular physician, an urgent care or to the ER if you are having difficulty breathing, swallowing or closing up of your throat. If you just have a rash then I would take antihistamines until you can be seen. ...Read more

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Had allergic reaction to hair dye, it's 3weeks later and I'm done with my meds, but it's still draining. Wat do u recommend? Please contact me asap.

Had allergic reaction to hair dye, it's 3weeks later and I'm done with my meds, but it's still draining. Wat do u recommend? Please contact me asap.

Contact dermatitis: You must be very frustrated and I'll bet the itching is unbearable! I think you need to continue treatment to manage symptoms until this reaction works it's way out of your system. Are/were you using oral glucocorticosteroids (Prednisone, Medrol) as well as massaging a topical steroid lotion in the scalp? There may also be a superimposed infection that needs to be treated. You'll get better. ...Read more

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I had an allergic reaction to my hair dye and now my scalp if puffing up?

Patch test!: I would recommend seeing your allergist or dermatologist for patch testing. There are specific ingredients in some hair dyes that are notorious for causing such reactions. ...Read more

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Allergic reaction to hair dye. Now have blisters, help?

Allergic reaction to hair dye. Now have blisters, help?

Call your doctor: Contact dermatitis to hair dye is common and can involve blisters. Call your doctor for medicine. Over the counter medicine will probably not be enough. ...Read more

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I need to go for a full bone scan and I have very bad anxiety, what's the percentage that I can get side effects or allergic reaction from the dye?

I need to go for a full bone scan and I have very bad anxiety, what's the percentage that I can get side effects or allergic reaction from the dye?

Very low if U have--: -never had the same dye B4. Many times it contains iodine. So iodine so if allergy B sure U inform the tech right away. Otherwise it's pretty safe, in my years of practice I never had anyone have a reaction. ...Read more

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Ct angiography offered. Terrified of dieing from allergic reaction to the dye. 22 male.

Ct angiography offered. Terrified of dieing from allergic reaction to the dye. 22 male.

Allergy: If you have not previously reacted to dye the chances of your doing so are not great, and since you are in a facility trained to deal with such reactions dying from dye is very unlikely. You might want to discuss this with the radiologist in charge. If still concerned see a psychiatrist or clinical psychologist and address your fears. Good luck. ...Read more

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I had a heart cath done a year ago had a stent implanted. I had an allergic reaction to the dye. I haven't felt good since. Help.

I had a heart cath done a year ago had a stent implanted. I had an allergic reaction to the dye. I haven't felt good since. Help.

See your doctor: With the newer contrast agents, it is rare to see any adverse reactions. There is a small chance of injury to the kidney. Your doctor can look for kidney problems using blood and urine tests. I would make sure to review the allergic reaction and the agent used that caused it with your doctor. There are many agents available. You may need to use a different one in the future. ...Read more

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I'm a hairdresser. Can the odor from hair dye cause an allergic reaction or the throat to swell/close?

I'm a hairdresser. Can the odor from hair dye cause an allergic reaction or the throat to swell/close?

Yes, tho...: ..it techically isn't an allergy. Could be hypersensitivity to the odor of the aerosol which can actually trigger tightness in upper airways such as laryngospasm or paradoxical vocal cord movement. Sensation usually triggers coughs but highly distressing airway spasm may develop. Sipping water and exiting area help. Can't rule out asthma so I'd see an airway specialist: allergist/ent/or pulmonary. ...Read more

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I think I am experiencing a chemical burn or allergic reaction after using hair dye. My scalp has sores that are weeping. I do have Seborrheic Dermatitis. What can I do at home?

I think I am experiencing a chemical burn or allergic reaction after using hair dye. My scalp has sores that are weeping. I do have Seborrheic Dermatitis. What can I do at home?

Exam needed: Reactions to hair dye do occur and will resolve after a period of time. Since you have more than redness or itching, I recommend that you be examined by your physician or a dermatologist to see if secondary infection is present and if so, appropriate treatment can be started. In the meantime apply warm soaks and, if possible, apply a combination of antibacterial and cortisone type cream until seen ...Read more

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I want a cardiac CT scan but am scared of allergic reaction to the dye, I have mild asthma. Can I request Benadryl (diphenhydramine) or how can I get round this?

See answer: Talk to your dr. / radiologist about the appropriate pre- procedure allergic preparation. It usually involves pre-procedure oral steroids (if you are an asthmatic already on steroids this may be modified), possibly an oral antihistamine, and may be performed in a hospital center depending on the severity of your prior iodine sensitivity. ...Read more

Dr. John Chiu
2,638 Doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


Dr. John Chiu
1,044 Doctors shared insights

Allergic Reaction (Definition)

Sensitivities to substances, called allergens, that come into contact with the skin, nose, eyes, respiratory tract, and gastrointestinal tract. They can be inhaled into the ...Read more