When I explain diagnostic uncertainty, I start with transparency and structure, because patients trust you more when they understand the process. I say, "Based on what you've shared today, I have a few possible explanations, and it would be premature to label this before we gather a bit more information." Then I add, "Here is what we know right now, here is what we do not know yet, and here is what we are going to do next." I use supportive language like, "You are not alone in this, and we will stay with it until we have a clearer picture." To reduce anxiety, I spell out the next step in plain terms, including timing, "I want you to complete X before our next visit, and we will review it together on (timeframe)." I also set clear expectations by inviting questions, "What is your biggest concern about waiting for more information, and what would feel most reassuring between now and our follow-up?" Finally, I reinforce access and clarity by offering a simple Q&A style recap of logistics and next steps, so the patient leaves knowing exactly what to watch for and how to reach the office if something changes.