I just found out that someone i Love very dearly is having some problems, he happens to be my uncle, all of a sudden he became very depressed and sometimes loses control of his body/mind he get very angry and shouts out of the blue, and doesnt remember the incident that happened, the shouting or so on...
I traced it to one possibility back in his late teens around 19 or maybe 20 he had a major car accident, the car was totaled, it was a miracle he came out of it without a scratch, but he did hit his head, so im linking it to a traumatic brain injury, but this started lately and he is over 24 25 now, any suggestions is more then welcomed opinions and any type of scenario is very appreciated!!
I am wondering what type of trauma could do this and only start side effects after years ?
Names refferals to other cases, news, wiki, and type of info that could help me

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I thank you in advance for your patientce and help.
If you need to know anything please just ask.