I'm kicking myself for writing this but I just can't help it. Curiosity is killing me here. The way it implies that it's incurable but manageable to the point of still being able to work is making my mind jump to different diseases that are incurable but manageable. I hope I'm very wrong but the first thing I thought of was HIV/AIDS. I just keep thinking of Magic Johnson and how he retired from basketball but is still doing very well almost 30 years later presumably because of his access to the best treatments. When Jobs was diagnosed with cancer we knew from the start it was cancer. When a public figure like Moritz makes an announcement like this but doesn't disclose the disease I'd guess it's either simply because he wants his privacy or because whatever disease he has may have a stigma attached like HIV does.
When it comes to things like this even the most famous of people deserve their right to privacy be respected. That said, I feel like it isn't too common for such people to drop big news like this and not say what the disease is which is why I jumped to wondering if it's a disease that carries a stigma. God, I feel like such a dick writing this. It's a real sensitive topic, I know. Maybe someone has some more information somehow though? Anyone?