Hypothyroidism Flashcards
(9 cards)
What is the most common cause of hypothyroidism in the developed world?
Hashimoto’s thyroiditis, an autoimmune condition.
What antibodies are associated with Hashimoto’s thyroiditis?
Anti-thyroid peroxidase (anti-TPO) and anti-thyroglobulin antibodies.
What is the most common cause of hypothyroidism in the developing world?
Iodine deficiency.
Name treatments for hyperthyroidism that can lead to hypothyroidism.
Carbimazole, propylthiouracil, radioactive iodine, and thyroid surgery.
What medications can cause hypothyroidism?
Lithium and amiodarone.
What is secondary (central) hypothyroidism and its common causes?
It’s due to pituitary failure to produce TSH; causes include pituitary tumors, infections, Sheehan’s syndrome, and radiation therapy.
List common symptoms of hypothyroidism.
Weight gain, fatigue, dry skin, hair loss, edema, amenorrhea, constipation.
What are the typical lab findings in primary hypothyroidism?
Low T3/T4, high TSH.
How is hypothyroidism treated and monitored?
With oral levothyroxine; monitor TSH monthly until stable, then less frequently.
