Question 1

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

Accepted Answer

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.

Question 2

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?

Accepted Answer

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.

Question 3

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

Accepted Answer

They can: It depends on your allergic status. An allergist  can help this clarify.

Question 4

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?

Accepted Answer

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).

Question 5

can you tell me is hyperness a symptom of an allergic reaction to red dye?

Accepted Answer

It is possible: Red #40 (Allura Red) has been associated with hyperactivity.

Question 6

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

Accepted Answer

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.

Question 7

what can i do if i had an allergic reaction to hair dye?

Accepted Answer

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

Question 8

i just had an allergic reaction to hair dye! please help?

Accepted Answer

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.

Question 9

is it unusual to have severe allergic reaction to the mri dye?

Accepted Answer

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%).

Question 10

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

Accepted Answer

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.

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Doctor answers about:

Allergic reactions to ultramarine dyes in cosmetics

A member asked:

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

A member asked:

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?

A member asked:

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

A member asked:

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?

A member asked:

Can you tell me is hyperness a symptom of an allergic reaction to red dye?

A member asked:

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

A member asked:

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

A member asked:

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

A member asked:

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

A member asked:

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

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