In a patient with both adrenal insufficiency and hypothyroidism, which condition should be corrected first?

Glucocorticoid Replacement Before Levothyroxine in Coexisting Adrenal Insufficiency and Hypothyroidism

Glucocorticoid replacement should be corrected first before initiating levothyroxine in patients with adrenal insufficiency. [1]

Thyroid hormone accelerates endogenous cortisol clearance and can unmask insufficient cortisol production, which can precipitate acute adrenal crisis. [1]