The most severe form of hypothyroidism characterized by swelling of the hands, face, and feet; may progress to coma and death is called what?

• A. Myxedema
• B. Goiter
• C. Cretinism
• D. Hashimoto's disease

Answer: (A)

This question is testing your understanding of myxedema, the edema associated with advanced hypothyroidism. In severe hypothyroidism, there is accumulation of mucopolysaccharides in interstitial tissues, leading to non-pitting swelling most noticeable in the face, hands, and feet. This swelling is classically called myxedema. If treatment is delayed, the condition can progress to myxedema coma, a life-threatening state with altered mental status, hypothermia, and cardiovascular collapse that requires urgent care.

To differentiate from the other terms: goiter is simply enlargement of the thyroid gland; cretinism refers to untreated congenital hypothyroidism leading to developmental issues; Hashimoto's disease is an autoimmune cause of hypothyroidism. None of these describe the characteristic edema pattern seen in severe hypothyroidism the way myxedema does.