IIH can be triggered by several factors, most commonly due to a sudden increase in iodine intake. This increase can result from dietary supplements, medications, or certain medical procedures. The thyroid gland, in some individuals, becomes overwhelmed by the sudden abundance of iodine, leading to increased production of thyroid hormones. Populations at risk include those with pre-existing thyroid nodular diseases and the elderly, who may have a reduced capacity to regulate hormone production efficiently.
