Which condition can result from hypersecretion of thyroxin?

The condition that can result from hypersecretion of thyroxin is Graves' Disease. In this autoimmune disorder, the immune system mistakenly stimulates the thyroid gland, leading to an overproduction of thyroxin (T4), which can increase metabolism and lead to symptoms such as heat intolerance, weight loss, and increased appetite, among others.

Graves' Disease is characterized by its specific symptoms and its association with hyperthyroidism due to an excess of thyroid hormones. The overproduction of thyroxin is a key feature of this condition, differentiating it from other options.

Conditions like Hashimoto's thyroiditis, on the other hand, usually result in the underproduction of thyroid hormones (hypothyroidism) due to the destruction of thyroid tissue. Diabetes mellitus is a metabolic disorder primarily related to insulin production or function rather than thyroid hormones. Cushing's syndrome is associated with excessive cortisol production, not thyroxin. Each of these conditions affects different hormonal pathways, making Graves' Disease the correct choice regarding hypersecretion of thyroxin.