super shaky hands that mean doing things like pipetting into agarose / polyacrylamide gels and adding fine powder into small places is really difficult (which sucks ass if you're majoring in chem, biochem, and pharm syntheses, js).
congenital arthritis in my knees from my father's side but it's nbd unless i'm walking for hours and hours on end. my dad's had surgery on both knees for his arthritis and i've most probably got the same thing which doesn't really bode well.
does making appalling puns ad infinitum count as an illness?