One of the following conditions is not linked to deficiency of thyroid hormones

Options

A. Cretinism
B. Goitre
C. Myxoedema
D. Exophthalmos

Answer

To solve the question regarding which condition is not linked to the deficiency of thyroid hormones, we will analyze each option provided:

1. **Cretinism**: This condition is associated with severe hypothyroidism during infancy or early childhood. It results from a deficiency of thyroid hormones, leading to stunted growth and mental retardation. Therefore, cretinism is linked to thyroid hormone deficiency.

2. **Goiter**: Goiter is an enlargement of the thyroid gland, which can occur due to iodine deficiency. It is also associated with hypothyroidism, as the lack of thyroid hormones can lead to an increase in TSH (thyroid-stimulating hormone), causing the thyroid gland to enlarge. Hence, goiter is also related to thyroid hormone deficiency.

3. **Myxedema**: This condition is a severe form of hypothyroidism in adults. It is characterized by swelling of the skin and underlying tissues, and it is directly linked to a deficiency of thyroid hormones. Therefore, myxedema is also associated with thyroid hormone deficiency.

4. **Exophthalmos**: This condition is characterized by the protrusion of the eyeballs and is commonly associated with hyperthyroidism, particularly in Graves' disease. It is not linked to a deficiency of thyroid hormones but rather to an excess of them.

Based on this analysis, the condition that is **not linked to deficiency of thyroid hormones** is:

**Answer: Exophthalmos (Option D)**