Concept:
Glucocorticoids (like cortisol) are hormones secreted by the adrenal cortex and play roles in metabolism, stress response, and immune regulation.
• Hypersecretion of glucocorticoids leads to Cushing's syndrome/disease.
• Hyposecretion leads to Addison's disease.
Step 1: Understand hormone imbalance.
Excess cortisol causes metabolic disturbances like fat redistribution, high blood glucose, and muscle wasting.
Step 2: Identify disease.
• Cushing's disease $\rightarrow$ Excess glucocorticoids
• Addison's disease $\rightarrow$ Deficiency
• Grave's disease $\rightarrow$ Hyperthyroidism
• Bleeder's disease $\rightarrow$ Hemophilia
Step 3: Conclusion.
Thus, hypersecretion of glucocorticoids leads to Cushing's disease.
Final Answer: Option (A)