Master the Adrenal Gland Challenge 2026 – Conquer Disorders with Confidence!

Adrenal insufficiency, especially primary adrenal failure, raises ACTH levels because cortisol production is too low. The ACTH precursor POMC also yields melanocyte-stimulating hormone, which stimulates pigment production in the skin. The resulting hyperpigmentation is a characteristic sign, often seen in sun-exposed areas, skin folds, scars, and mucous membranes. This happens more with primary adrenal failure when ACTH is high; in secondary adrenal insufficiency ACTH may be low or normal, so hyperpigmentation is less expected. While low aldosterone can cause hyperkalemia and hypotension, and vitiligo is a separate autoimmune process, the distinctive darkening of the skin is the most consistent finding you’d anticipate.