Concussions are fucking bad news. They may not seem like much, especially when you're younger but they stack up. I had several and bounced right back like nothing. Really never had any problems till I had a good one when I was 22. Had severe headaches for a solid year, pretty bad headaches less frequently that eventually balanced out over the next 6 months.
When I was 24 I hit my head again pretty solid. Drove 3.5 hours home from mount snow. I don't think I even remembered driving home. Was pretty fucked. Head was super weird. Some wubbing, and just out there. My balance was fucked, like using the walls to keep myself from falling over. I mean I could walk, but not that well. Also my footsteps even lightly put a lot of pressure on my brain like I was slamming my head. And my head even on the lightest pillow felt like it was crushing itself. This went on for a while. I would just sit up and watch movies till I fell asleep. Couldn't really watch much for a few days because it made me feel sick.
Shit was nuts though. Even several months after if I stepped off a curb wrong and planted my heel wrong I would feel dazed. Shit was crazy. I wore the fuck out of my shoes and boots because I would shuffle everywhere. I almost tripped several times because I barely picked up my feet because i couldn't take the compression.
Now I have to be absurdly careful. I do my best to minimize risks in things I do and just keep living as best as possible. I'm def more irritable I've noticed. I don't like that really as I've always been a nearly chronically cheerful guy around people. But shit happens. I thought about staying away from the mountain, but that's what I love, my hobby, my job, my passion. Fuck it. I just take it a lot more mellow these days. It sucks to have to be so fucking paranoid sometimes, but it beats not riding.
Sparknotes: concussions are bad, try to not break your brain. If you get a decent concussion, be super careful until it's healed. Getting another good knock to the head right after a bad concussion is no bueno. Also concussions stack as you go through life. Be careful out there. Don't let the thought keep you from killing it in the park, but be safe. If you fuck up your head give it time to heal.