The real question is at the evolutionary level which is, what the fuck do the little assholes get out of making their bite a slight irritation?
A tick can bury its head in the tip of dick, spend days sucking so much blood it's an engorged blimp. Assuming I am blind and my arms are too short to reach my dick, the thing could be there for years and I would have no fucking clue it was there unless I got lime disease or someone else sees it.
Hyperbolic scenario with the whole dick tip thing but I have gotten back from hunting. Saw what looked like a scratch on my neck line, thought it was weird cuz I didn't remember any prickers scratching me. Fast forward 3 days and I look in the mirror and see what looks like a skin tag. I'm like what the fuck, grab tweezers and rip it off to learn it was a fuckin tick sucking on my jugular for days. They are like the opposite of the mosquito, the tick releases a numbing agent or something so you don't even feel the bite or the tick the whole time its on you.
Tldr: mosquitoes r dum 4 itching. Ticks r pros at stealth biting.