Man I got a lissst if we go all the way back. Broke my left arm, have had to have stitches for nasty gashes in both legs (two separate occasions), had my adenoids out, and had a hernia as a baby. I also get ear infections at least once a year. They hurt. It sucks.
If we want to talk the weirdest thing that happened, around kindergarten I had a huge lump the size of a golfball swell up on my neck pretty much overnight. Doctor diagnosed it as an infected lymph node and it had to be taken out. Thankfully it wasn't cancerous, but they never figured out what caused it. I've got a kind of substantial (maybe 1-1.5 inch) indented scar on my neck because of it. Pretty much kills any chance I have at growing decent facial hair, but it's definitely a conversation piece, haha.
Oh, and I had muscle weakness on my left (I think?) arm. Another thing they had no explanation for as it wasn't neurological or any sort of muscle disorder. Hasn't caused me too much of an issue, but I can definitely feel it at times.
I've also got bouts of depression and anxiety (particularly social anxiety) I deal with, but that stuff isn't anything to brag about.
I also have kind of shit vision. I'm nearsighted. I'm not near as bad as some people, but it definitely requires glasses/contacts.