Interesting. I lived in a two-family dwelling when I was a kid. My paternal grandparents lived upstairs and I visited all the time. At some point (3 or 4? before kindergarten, in any case), I fell down the stairs. I have a knot below my lower lip where hair will not grow. (It looks like I’m trying to be cool with a “soul patch” – I am not.)
I had scarlet fever as a child. Not sure how I acquired it; I think I just had a crap immune system as a kid, I was always sick with some respiratory thing or other. The memorable thing for me about the illness was it occurred when I was 8 or so, mere months after I read a children’s biography of Laura Bridgman, a girl who was blind and deaf (before Helen Keller). She had that happen as a sequelae of scarlet fever.
So, as was my wont as a child, when I woke up sick, and my mother (who is of an older generation and had seen such things) provisionally diagnosed me, I commenced to very quietly freak out. She took me to the doctor, who agreed with her. He told me he’d call in an antibiotic prescription and I could go back to school in a few days.
I sat there, waiting for the other shoe to drop – when could I expect my sight to go? Or would hearing go first? Finally, he knew something was wrong, asked me, it all came out. He told me that not only was that a vanishingly rare result, the fact that we had antibiotics now meant I didn’t even have to worry about it.
But that’s one of the things burned into my brain from my youth.
All that said? There is a recognized disorder – called PANDAS, some times – in kids where after a serious infection (strep throat, usually) they develop OCD or other “mental” symptoms. The body and brain are more closely tied than we realize, I think.