What physical appearance of hair may be observed in patients with hypothyroidism?

In patients with hypothyroidism, the physical appearance of hair is often fine and silky. This condition leads to a reduction in thyroid hormones, which can affect hair growth and texture. As a result, patients may experience thinning of the hair, which can appear softer and finer than normal. The alteration in the hair's characteristics is due to the slowed metabolism and reduced circulation that can accompany hypothyroidism, affecting hair follicle function.

This contrasts with other conditions or types of hair abnormalities that may be associated with different hormonal or nutritional factors. For instance, thick and coarse hair typically suggests a different hormonal influence, and dry and brittle hair may indicate other deficiencies or health issues, such as those seen in certain nutritional deficiencies or other endocrine disorders. Curly and frizzy hair is also not characteristic of hypothyroidism but rather relates to hair texture that can be influenced by genetic factors or environmental conditions.