brain trauma

a traffic accident

to bear, to carry on one's back / to assume or take a responsibility / to be in a debt of gratitude / to suffer an injury

head (part of the body) / head (topmost or leading part)

external physical trauma

accident; incident; trouble

(slang) (of an incident) to occur

to travel along a specific route / to have contact with other people, to engage in social intercourse

transportation / traffic

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend