Hypoadrenalism is also known as which of the following?

Hypoadrenalism refers to a condition where the adrenal glands do not produce sufficient amounts of hormones, particularly cortisol. It is most commonly associated with Addison's disease, which is the primary disorder stemming from this underproduction. In Addison's disease, the adrenal cortex is damaged either due to autoimmune processes, infections, or other factors, leading to the insufficient secretion of adrenal hormones.

In contrast, Cushing's syndrome relates to excessive production of cortisol, making it directly opposite to hypoadrenalism. Grave's disease is an autoimmune disorder that leads to hyperthyroidism, and pheochromocytoma is a tumor of the adrenal gland that typically causes overproduction of catecholamines. Hence, Addison's disease is the correct designation for hypoadrenalism as it directly involves the lack of adrenal hormone production. Understanding this relationship clarifies why Addison's is synonymous with hypoadrenalism.