I had encephalitis and short term memory. I was placed on antidepressants I was having gait problems and still today. Then I was diagnosed with autoimmune encephalitis and then hepatic encephalopathy. Is this normal from a brain injury and concussions. And if you have tremors and pass out can it be a seizures or concussion. And if all your test are normal does that rule out concussion. But now my memory has comeback can that happen after years of brain injuries. And is there medicines beside antidepressants for brain injuries and if you still have headaches is that a concern for continued brain injuries.