Hi, my Dad bumped his head on a tree a couple weeks ago and now today is having minor trouble with his memory, and he's also finding it harder to control his left arm and leg than his right. It sounds like a concussion and possibly some sort of minor stroke. Does that sound right? We took him to a doctor this morning, and both ways to and from the house, he either took a wrong turn or passed the street he needed to turn on. He says he's fine now, but we can definitely still see that he has some trouble with at least his left arm.