Congenital iodine deficiency syndrome degree of iodine deficiency was milder and manifested primarily as thyroid enlargement rather than severe mental and physical impairment. In Switzerland, for example, where soil does not contain a large amount of iodine, cases of congenital iodine deficiency syndrome were very abundant and even considered genetically caused. As the variety of food sources dramatically increased in Europe and North America and the populations became less completely dependent on locally grown food, the prevalence of endemic goitre diminished. The early 20th century saw the discovery of the relationships of neurological impairment with hypothyroidism due to iodine deficiency. Both have been largely
Pseudo-goitre attached to the thyroid such as a true goitre, also moves along with thyroid. A pseudogoitre is unlikely if the area of fullness moves with swallowing. If pseudogoitre is due to cervical lordosis, the fullness disappears on straightening of the neck. A high-lying thyroid can be excluded by palpation. If the diagnosis is uncertain after clinical examination, an ultrasonogram is taken to rule out pathology of the neck. Pseudo-goitre Pseudo-goitre is the apparent fullness of the front part of the neck. It may be mistakenly diagnosed as thyroid enlargement. The cause for pseudogoitre can be fat tissue of the neck,