Can you get a concussion by hitting yourself in the head?

Certianly yes.If u: hit hard enough.I would redirect your focus to why or how u did this?If intentional ,you need to talk to your doctor about this behavior,and get help.Look up the symptoms of concussion and see how many you R experiencing.It is very important not to get a second concussion while suffering symptoms from the first one.This is how people die from concussion.If you R having symptoms,see your doc.