Traumatic brain injury (TBI), also known as intracranial injury, occurs when an external force injure the brain.

TBI can be classified based on severity, mechanism (closed or penetrating head injury), or other features (e.g., occurring in a specific location or over a widespread area).

Head injury is a broader category that may involve damage to other structures such as the scalp and skull.

TBI can result in physical, cognitive, social, emotional, and behavioral symptoms, and outcome can range from complete recovery to permanent disability or death.

Posttraumatic stress disorder (PTSD) is a mental disorder that can develop after a person is exposed to a traumatic event, such as sexual assault, warfare, traffic collisions, or other threats on a person's life.

Symptoms may include disturbing thoughts, feelings, or dreams related to the events, mental or physical distress to trauma-related cues, attempts to avoid trauma-related cues, alterations in how a person thinks and feels, and an increase in the fight-or-flight response.

These symptoms last for more than a month after the event.

Young children are less likely to show distress but instead may express their memories through play.

Those with PTSD are at a higher risk of suicide.

Information is that which informs.

In other words, it is the answer to a question of some kind.

It is thus related to data and knowledge, as data represents values attributed to parameters, and knowledge signifies understanding of real things or abstract concepts.

As it regards data, the information's existence is not necessarily coupled to an observer (it exists beyond an event horizon, for example), while in the case of knowledge, the information requires a cognitive observer.

In the context of human society, a family (from) is a group of people affiliated either by consanguinity (by recognized birth), affinity (by marriage or other relationship), or co-residence (as implied by the etymology of the English word "family") or some combination of these.

Members of the immediate family may include spouses, parents, brothers, sisters, sons, and daughters.

Members of the extended family may include grandparents, aunts, uncles, cousins, nephews, nieces, and siblings-in-law.

Sometimes these are also considered members of the immediate family, depending on an individual's specific relationship with them.

A person is a being, such as a human, that has certain capacities or attributes constituting personhood, which in turn is defined differently by different authors in different disciplines, and by different cultures in different times and places.