The phrase "brain bleeding" refers to the situation when blood leaks from the blood vessels inside the brain, which can lead to severe health issues and damage to the brain. Full definition
Depending on your symptoms, they'll want to rule out rare but serious possibilities like brain bleeding. (health.com)
Because the impact of your brain hitting the side of your scull can cause brain bleeding. (palermolawgroup.com)
Athletes can receive serious injury (e.g. fatal brain bleeding and swelling) and possibly permanent impairment from concussions such as neurological disturbances. (headcasecompany.com)