A few years ago I got bitten by something after being close to a deer but never saw any kind of insect. I had a large inflamed area (one circle IIRC) for a whil

A few years ago I got bitten by something after being close to a deer but never saw any kind of insect. I had a large inflamed area (one circle IIRC) for a while, experienced mild flu symptoms for a few weeks, and then some wrist pains a few weeks after that. Doctor wouldn't give me antibiotics. I haven't had any physical symptoms since, but I'm pretty sure my mood and cognitive ability has taken a hit. There are of course so many factors not controlled for, but it's always at the back of my mind.