The nurse is preparing a client for discharge who was recently diagnosed with Addison's disease. Which instruction is most important for the nurse to include in this client's discharge teaching plan?

Choice A reason: Increasing sodium intake is helpful because clients with Addison’s disease often lose sodium due to low aldosterone levels. However, this is not the most critical instruction compared to medication adherence. Choice B reason: Avoiding extreme temperatures is supportive advice because clients with Addison’s disease may have difficulty adapting to stressors, but it is not the most important discharge instruction. Choice C reason: Using a walker when weakness occurs may help prevent falls, but it does not address the underlying disease management. This is a supportive measure, not a priority. Choice D reason: Taking prescribed cortisone accurately is the most important instruction. Addison’s disease is characterized by adrenal insufficiency, and clients depend on lifelong corticosteroid replacement to prevent adrenal crisis. Missing doses or incorrect administration can lead to life-threatening complications.