Asked by: Imad Enohin
asked in category: General Last Updated: 18th February, 2020

How do primary and secondary hypothyroidism differ?

Primary hypothyroidism is most common; it is due to disease in the thyroid, and thyroid-stimulating hormone (TSH) levels are high. Secondary hypothyroidism is less common; it is due to pituitary or hypothalamic disease, and TSH levels are low.

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In this regard, what is the difference between primary and secondary hypothyroidism?

Primary hypothyroidism occurs when the thyroid gland does not make sufficient amounts of thyroid hormone. Secondary (or central) hypothyroidism is caused by disorders of the pituitary gland or hypothalamus. Generally, secondary hypothyroidism is associated with low TSH and low T3 and T4.

Furthermore, what is the difference between primary and central hypothyroidism? Patients with central hypothyroidism usually display mild to moderate symptoms and signs similar to those of primary hypothyroidism, which include fatigue, constipation, dry skin and weight gain. Moreover, the presence of signs and symptoms of other pituitary hormone deficiencies may mask underlying CH.

Hereof, how do primary and secondary hyperthyroidism differ?

It can be primary or secondary:

  1. Primary hyperthyroidism is the term used when the pathology is within the thyroid gland.
  2. Secondary hyperthyroidism is the term used when the thyroid gland is stimulated by excessive thyroid-stimulating hormone (TSH) in the circulation.

What are the two types of hypothyroidism?

There are three types of hypothyroidism: primary, secondary, and tertiary. In primary hypothyroidism, your thyroid is being stimulated properly. However, it isn't able to produce enough thyroid hormones for your body to function properly.

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