Myxedema is associated with deficiency of which hormone?

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Multiple Choice

Myxedema is associated with deficiency of which hormone?

This question hinges on recognizing that myxedema is a sign of severe thyroid hormone deficiency. Thyroid hormone sets the body's baseline metabolic rate and supports normal tissue function. When levels are very low, metabolism slows and mucopolysaccharides accumulate in the dermis, leading to the characteristic thick, nonpitting edema of myxedema. That direct link to thyroid hormone is why this is the best choice. The other hormones listed drive different conditions (insulin deficiency causes diabetes; cortisol deficiency causes adrenal insufficiency; adrenaline deficiency affects the stress response) and do not produce the mucopolysaccharide-edema pattern seen in myxedema.

This question hinges on recognizing that myxedema is a sign of severe thyroid hormone deficiency. Thyroid hormone sets the body's baseline metabolic rate and supports normal tissue function. When levels are very low, metabolism slows and mucopolysaccharides accumulate in the dermis, leading to the characteristic thick, nonpitting edema of myxedema. That direct link to thyroid hormone is why this is the best choice. The other hormones listed drive different conditions (insulin deficiency causes diabetes; cortisol deficiency causes adrenal insufficiency; adrenaline deficiency affects the stress response) and do not produce the mucopolysaccharide-edema pattern seen in myxedema.

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