Summary

• Deficiency of one or more pituitary hormones.
• Variable presentation depending on cause.
• Symptoms include headaches, amenorrhoea, galactorrhoea, and visual field defects.
• Treatment depends on correction of the underlying cause. Where causes are not correctable, treatment focuses on replacing the target hormones.
• Patients who require cortisol for ACTH deficiency require increased dosage in times of stress (such as infection, trauma, and surgery).