Adrenal insufficiency: Physiology, clinical presentation and diagnostic challenges

Area of Science:

• Endocrinology
• HPA Axis Physiology

Background:

• Adrenal insufficiency (AI) encompasses primary, secondary, and tertiary forms, impacting health and quality of life.
• AI increases morbidity and mortality; autoimmune adrenalitis is a common cause of primary AI.
• Untreated AI presents with fatigue and infection risk, potentially leading to adrenal crisis.

Purpose of the Study:

• To review normal hypothalamic-pituitary-adrenal (HPA) axis physiology.
• To elucidate how HPA axis physiology aids in understanding AI clinical presentation.
• To explain the basis for biochemical investigations in diagnosing AI.

Main Methods:

• Review of normal HPA axis physiology.
• Correlation of HPA axis function with AI clinical manifestations.
• Explanation of diagnostic biochemical investigations.

Main Results:

• Normal HPA axis function is crucial for maintaining homeostasis.
• Understanding HPA axis pathophysiology clarifies AI symptoms and crisis risks.
• Biochemical tests derived from HPA axis knowledge enable AI diagnosis.

Conclusions:

• Timely diagnosis of AI through understanding HPA axis physiology is critical.
• Appropriate management based on accurate diagnosis improves health and prevents crises.
• Further research into HPA axis regulation and AI pathophysiology is warranted.