My brain works just fine, probably.
My brain works just fine, probably.
Everyone has this from time to time, and it can be made worse by a lot of causes, from hypoglycemia, fatigue, poor sleep, depression, and a lot more. But, the official diagnosis for ADHD generally comes down to doing this stuff much more often than the general population, to the point of being disruptive to your ability to live your life, while also ruling out all the other more common causes.
If it's that much of a problem, look into getting a diagnosis, because it'll tell you what's going on and start you on the path to solving it no matter what's the root cause.