In the last months, I've been veery sick twice (f....ing Belgium).
That means for 2 days, staying in bed, sleeping and waking up successively all day and all night.

And every time, I've been dreaming the exact same repetitive thing. It means the first night, one thing, the day after, another thing, but every time, it was the same repetitive thing during the whole day (or night).

So I wondered if the brain has a specific mechanism that starts when you are sick, when the body is fighting an infection or a virus. I know that our knowledge about interactions between the brain and the body is not perfect, so I searched studies about this, but couldn't find anything.

But maybe it's just my brain is not working properly, wouldn't be a surprise

Do you know what sepsis is? When you have an infection the body's response may become excessive and the immune system goes haywire and begins attacking not only the source of infection, but also the body as well. The sleep disturbance and dreaming you write about tells me the brain may have been swollen slightly during the acute phase of your illness. The fact that you write clearly tells me the worst may be over. You survived. That's good. Some people aren't so lucky. Sepsis is a serious world wide problem, and everyone needs to know what it is, and how it needs to be treated.

This link is for educational purposes only:
http://www.youtube.com/watch?v=ELjThkDk6u4

looks serious, but never heard about it