Some co-workers not knowing about my diagnosis

Today, I was at my second job sharing some pictures that I'd taken last month. I hadn’t realized that as I shared these pictures, that there would be questions from some co-workers who I was sharing them with. I guess that I hadn't expected that to happen. The pictures were from my trip to Washington, D.C as an Alzheimer's advocate. I had attended the policy forum conferences for the second year. There are some people at both of my jobs who DO NOT know about my diagnosis. As I shared the pictures with one particular co-worker who is a college student, he asked me why I was so passionate about this cause. Then I explained about my diagnosis. I included both EOAD and MCI diagnosis. His reply to me was, “so you don't have Alzheimer's? That's good!” I told him that I had no idea which was the correct diagnosis but I was not spending time worrying about it. I guess you could say that this was me sharing “awareness” at my job! Luckily, we were very busy at work, so after I left the break room and I went back to work, I had forgotten about how hard it had been for me to explain this. It took several hours after being home from work before I acknowledged what it was like for me. Perhaps when my work schedule calms down a little, I'll be able to think clearer.