<s>[INST] I had a tramatic  brain injury in 2011. im so confused all the time. i forget things even right after or even during what ever im doing. i also seem to regress and talk like and act like a child and im not sure why it happens. i will know what an object is but cant seem to get it out it comes out wrong. i forget where i am. my question is dimentia runs in my family along with heart disease and cancer. how do i know which thing it is. [/INST] Hello thanks for asking from ChatDoctorIt is common to develop cognitive impairment after trauma to head and level of impairment depends upon severity of trauma. You have developed symptoms immediately after trauma and there is history of dementia and cardiac problems in your family, this increases the risk of cognitive impairment. This is also called as Post Traumatic Dementia. I would advise you to visit a psychiatrist for management of dementia. Cognitive enhancer Chat Doctor.  These  </s>