A 38-year-old woman from rural Maharashtra presents with progressive fatigue, weight loss, and hyperpigmentation over 6 months. Investigations reveal hyponatraemia (Na⁺ 125 mEq/L), hyperkalaemia (K⁺ 6.2 mEq/L), and elevated ACTH (180 pg/mL). A diagnosis of Addison disease is made. Which of the following is NOT a recognised feature or finding in primary adrenal insufficiency?