Can iodine supplements trigger itchy skin?

If a new supplement is taken, some might end up with itchy skin. Taking new supplements might increase the risk for an allergic reaction. If the individual is currently using iodine supplements and itchy skin arises, a doctor must be consulted since this might be an indication of an allergy.

The adverse response to iodine have been known to cause fatality from anaphylaxis which is a serious reaction that involves the whole body.

Close look on iodine


Hives is an allergic rash that can form on any part of the skin as patches of welts.

Iodine is a vital mineral that the body utilizes to produce hormones for growth. Most of the iodine in the body is in the thyroid while the rest are scattered all over the body. Those who do not produce enough iodine can end up with hypothyroidism.

Iodine supplements are usually taken to prevent complications from this condition. Most healthy individuals do not need to use an iodine supplement.

Why itchy skin arises?

Itchy skin is the outcome of having increased level of histamine at the upper skin surface. If an individual is highly sensitive to iodine, the body releases antibodies which initiates the production of chemicals including histamine.

The release of histamine causes the blood vessels to dilate which increases the blood flow, leading to inflammation, itchiness and irritation. The itchy skin due to an allergic reaction can cause the formation of hives, generalized itchiness or eczema.

Allergic rashes

The allergic rashes that might arise include eczema and hives.

  • Hives is an allergic rash that can form on any part of the skin as patches of welts. It has well-defined borders with a flattened surface on top of the welt. The rash can cause intense itchiness and might even spread if scratched.
  • Eczema is described as hypersensitivity of the skin that can be instigated by sensitivity to iodine. It causes elevated bumps filled with fluid that might rupture, crust over and scar.

What are the possible complications?

If the individual ends up with itchy skin along with chest tightness, shortness of breath, dizziness, wheezing, vomiting, lightheadedness, diarrhea, bloating, stomach pain, nasal congestion, abdominal cramping, elevated heart rate, facial swelling and a drop in the blood pressure, a doctor should be seen. Remember that these might be indications of a severe allergic reaction.


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