Which condition might require treatment with ProZinc?

ProZinc is a veterinary insulin specifically designed for the management of diabetes mellitus in dogs and cats. This condition occurs when the body cannot produce enough insulin or when the insulin produced is not effective, leading to high blood sugar levels. ProZinc helps to lower and stabilize these blood sugar levels by mimicking the natural action of insulin in regulating glucose metabolism.

The other conditions mentioned do not involve the direct management of blood sugar levels through insulin therapy. Hypothyroidism, for example, involves an underactive thyroid gland and is treated with thyroid hormone replacement. Cushing's syndrome results from excess cortisol and typically requires medications that suppress adrenal gland activity. Adrenal insufficiency is a different hormonal imbalance that also does not respond to insulin therapy.

In the case of diabetes mellitus, the use of ProZinc is critical for restoring proper glucose levels and alleviating the symptoms associated with this disease, making it the appropriate answer to the question.