since last year a friend has mentally changed. She has fallen and hit her head several times leaving large lumps. Never went to Dr. She started forgetting important dates, got lost driving to familiar places, and had hallucinations. EEG, MRI (brain), meds. have been checked, seeing physicians but nothing seen. What conditions, ailments would cause this. Her mental condition continues to down slide and her quality of life is diminishing. Who does she need to see to get a dx?