Hypothyroidism

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Hypothyroidism

Hypothyroidism is a condition in which the thyroid gland does not produce enough thyroid hormone, which regulates the way the body uses energy.

A low thyroid level can cause symptoms of fatigue, weakness, lethargy, weight gain, depression, memory problems, constipation, dry skin, intolerance to cold, coarse and thinning hair, brittle nails, or a yellowish tint to the skin.

Hypothyroidism usually develops slowly. It often results from a problem in which the body's own natural defense (immune) system attacks the thyroid gland (autoimmune thyroiditis or Hashimoto's thyroiditis). Hypothyroidism may also develop following radiation treatment or surgical removal of the thyroid.

Hypothyroidism is treated with medications to replace the thyroid hormone. Symptoms usually disappear within a few months after treatment begins, but most people need to continue taking thyroid hormones for life.

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Author	Jeannette Curtis
Author	Caroline Rea, RN, BS, MS
Editor	Kathleen M. Ariss, MS
Editor	Susan Van Houten, RN, BSN, MBA
Associate Editor	Tracy Landauer
Associate Editor	Pat Truman, MATC
Primary Medical Reviewer	Patrice Burgess, MD - Family Medicine
Primary Medical Reviewer	Adam Husney, MD - Family Medicine
Primary Medical Reviewer	Kathleen Romito, MD - Family Medicine
Last Updated	May 25, 2007

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Last updated:	May 25, 2007
Author:	Caroline Rea, RN, BS, MS
Reviewed By:	Kathleen Romito, MD - Family Medicine
Editors:	Susan Van Houten, RN, BSN, MBA, Pat Truman, MATC

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