I don't get more anxious with illness. But I get this weird crap with fever and sleep. I can't fall asleep with fever. It's like suddenly I don't know where my body is, like for a moment my inner body map is missing. This leads to me flailing my arms and legs just so I can find them. Also I have more restless legs/arms as it is with a fever so this addon isn't welcome at all!! If my fever gets a little higher, I can't fall asleep, I go to the point where I am almost asleep, then I start seeing things to my inner eye. Like a wild animal attacking or something. And I am jerked awake.

Getting anxiety with illness can't be too rare though, the body tries to repair itself and yes then stress hormones are released.