What are the symptoms of allergy to iodine

Immunotherapy may be an option for a little number of people with certain severe and persistent allergies who are unable to control their symptoms using the measures above.

The treatment involves being given occasional little doses of the allergen, either as an injection, or as drops or tablets under the tongue, over the course of several years.

The injection can only be performed in a specialist clinic under the supervision of a doctor, as there’s a little risk of a severe reaction.

The drops or tablets can generally be taken at home.

The purpose of treatment is to help your body get used to the allergen so it does not react to it so severely.

What are the symptoms of allergy to iodine

This will not necessarily cure your allergy, but it’ll make it milder and mean you can take less medicine.

Avoiding exposure to allergens

The best way to hold your symptoms under control is often to avoid the things you’re allergic to, although this is not always practical.

For example, you may be capable to help manage:

  1. food allergies by being careful about what you eat
  2. mould allergies by keeping your home dry and well-ventilated, and dealing with any damp and condensation
  3. animal allergies by keeping pets exterior as much as possible and washing them regularly
  4. hay fever by staying indoors and avoiding grassy areas when the pollen count is high
  5. dust mite allergies by using allergy-proof duvets and pillows, and fitting wooden floors rather than carpets

The Term ‘Iodine Allergy’ is a Misnomer

Iodine is essential for producing thyroid hormones; therefore, iodine is present throughout the body, which is why it is impossible to own an allergy to elemental iodine.

The term iodine allergy is commonly used when referring to a reaction to iodinated radiological contrast media or an allergic reaction to povidone-iodine antiseptics, such as Betadine™.

Treating severe allergic reactions (anaphylaxis)

Some people with severe allergies may experience life-threatening reactions, known as anaphylaxis or anaphylactic shock.

If you’re at risk of this, you’ll be given special injectors containing a medicine called adrenaline to use in an emergency.

If you develop symptoms of anaphylaxis, such as difficulty breathing, you should inject yourself in the outer thigh before seeking emergency medical assist.

Find out more about treating anaphylaxis

Allergy medicines

Medicines for mild allergies are available from pharmacies without a prescription.

But always enquire a pharmacist or GP for advice before starting any new medicine, as they’re not suitable for everyone.


Antihistamines are the main medicines for allergies.

They can be used:

  1. as and when you notice the symptoms of an allergic reaction
  2. to prevent allergic reactions – for example, you may take them in the morning if you own hay fever and you know the pollen count is high that day

Antihistamines can be taken as tablets, capsules, creams, liquids, eye drops or nasal sprays, depending on which part of your body is affected by your allergy.


Decongestants can be used as a short-term treatment for a blocked nose caused by an allergic reaction.

They can be taken as tablets, capsules, nasal sprays or liquids.

Do not use them for more than a week at a time, as using them for endless periods can make your symptoms worse.

Lotions and creams

Red and itchy skin caused by an allergic reaction can sometimes be treated with over-the-counter creams and lotions, such as:

  1. moisturising creams (emollients) to hold the skin moist and protect it from allergens
  2. calamine lotion to reduce itchiness
  3. steroids to reduce inflammation


Steroid medicines can assist reduce inflammation caused by an allergic reaction.

What are the symptoms of allergy to iodine

They’re available as:

Sprays, drops and feeble steroid creams are available without a prescription.

Stronger creams, inhalers and tablets are available on prescription from a GP.

Treating specific allergic conditions

Use the links under to discover information about how specific allergies and related conditions are treated:

Sheet final reviewed: 22 November 2018
Next review due: 22 November 2021

To prevent a reaction, it is extremely significant to avoid every shellfish and shellfish products.

Always read food labels and enquire questions about ingredients before eating a food that you own not prepared yourself.

Most people who are allergic to one group of shellfish are allergic to other types. Your allergist will generally recommend you avoid every kinds of shellfish. If you are allergic to a specific type of shellfish but desire to eat other shellfish, talk to your doctor about further allergy testing.

Steer clear of seafood restaurants, where there is a high risk of food cross-contact.

What are the symptoms of allergy to iodine

You should also avoid touching shellfish and going to fish markets. Being in any area where shellfish are being cooked can put you at risk, as shellfish protein could be in the steam.

Shellfish is one of the eight major allergens that must be listed on packaged foods sold in the U.S., as required by federal law.

Avoid foods that contain shellfish or any of these ingredients:

  1. Barnacle
  2. Crawfish (crawdad, crayfish, ecrevisse)
  3. Crab
  4. Krill
  5. Prawns
  6. Lobster (langouste, langoustine, Moreton bay bugs, scampi, tomalley)
  7. Shrimp (crevette, scampi)

Your doctor may advise you to avoid mollusks* or these ingredients:

  1. Cockle
  2. Mussels
  3. Clams (cherrystone, geoduck, littleneck, pismo, quahog)
  4. Limpet (lapas, opihi)
  5. Scallops
  6. Cuttlefish
  7. Oysters
  8. Squid (calamari)
  9. Abalone
  10. Periwinkle
  11. Sea urchin
  12. Sea cucumber
  13. Snails (escargot)
  14. Octopus
  15. Whelk (Turban shell)

*Note: The federal government does not require mollusks to be fully disclosed on product labels.

Shellfish are sometimes found in the following:

  1. Bouillabaisse
  2. Glucosamine
  3. Cuttlefish ink
  4. Fish stock
  5. Seafood flavoring (e.g., crab or clam extract)
  6. Surimi

How to Identify Anaphylaxis

The signs and symptoms of anaphylaxis can vary greatly from person to person as well as from time to time in the same person.

Also, they may develop extremely quickly — within seconds of exposure to an allergen — or evolve over an hour or so.

The most common signs and symptoms of an allergic reaction include:

  1. Cough, difficulty or irregular breathing, wheezing, itchy throat or mouth, and difficulty swallowing
  2. Nausea, vomiting, abdominal pain, and diarrhea
  3. Itchiness, red bumps or welts on the skin (hives), and skin redness
  4. Dizziness, lightheadedness, heart palpitations, chest discomfort or tightness, mental confusion, weakness, lower blood pressure, rapid pulse, loss of consciousness, and fainting

An allergic reaction becomes more serious and is considered a medical emergency when any of the signs or symptoms are particularly severe, such as loss of consciousness or difficulty breathing, or if diverse parts or systems of the body are involved, such as having the combination of hives and vomiting, Dr.

What are the symptoms of allergy to iodine

Sicherer says.

How to Treat Anaphylaxis

As soon as anaphylaxis is detected, call 9-1-1 immediately and ister epinephrine if available. Attempt to hold the person as calm as possible.

If he or she has been diagnosed with a severe allergy, emergency medicine should be on hand. “The only treatment is injectable epinephrine,” says Robert Wood, MD, a professor of pediatrics and the chief of the division of pediatric allergy and immunology at Johns Hopkins Children’s Middle in Baltimore, Md.

What are the symptoms of allergy to iodine

“The most common misconception is that epinephrine is dangerous, which isn’t the case. Some doctors will often warn people not to give epinephrine until the final resort, but people with a severe allergic reaction need to take it sooner rather than later.”

People who own severe allergies may be told by their doctor to take a dose of epinephrine even before serious symptoms develop. "For example, if someone has a severe peanut allergy and they know they ate peanut, you could reasonably give the epinephrine before symptoms happen or if there were only mild ones,” Sicherer says.

While waiting for medical assistance to reach, follow these potentially life-saving tips:

  1. Avoid giving any oral allergy medicine and any liquids if the person is having trouble breathing.
  2. If the allergic reaction is from a bee sting, scrape the stinger off with a credit card or fingernail.

    Do not use tweezers, which will release more venom into the sting site.

  3. To assist prevent shock, own the person lie flat with his or her feet elevated about 12 inches and cover him or her with a blanket or jacket. Do not put the person in this position if it causes discomfort or if a neck, back, or leg injury is suspected.
  4. Do not put a pillow under the person’s head if he or she is having trouble breathing.

At the Emergency Room

Treating anaphylaxis doesn’t finish with injecting epinephrine, even if the person feels better. The next step is seeking medical care at an emergency room (ER).

“The reason you must go to the ER is because you’re having a serious allergic reaction, and even if you feel better after taking epinephrine, the symptoms can still come back," Sicherer says.

In fact, sometimes a person may get better after a severe allergic reaction but then own symptoms come back even stronger several hours later, which is called biphasic anaphylaxis, he adds.

“You should go to the ER and stay there for at least four hours to make certain the symptoms are under control," Sicherer says. Medical personnel will monitor you and give additional medications if needed.

Although the importance of adequate iodine levels within the body is frequently ignored, without a sufficient iodine level, the thyroid has difficulty producing the hormones that regulate cellular function and metabolism. So, how does the thyroid of an individual who is allergic to iodine function?

What are the symptoms of allergy to iodine

The reality is, there is no such thing as aniodine allergy.