A Traumatic Brain Injury (TBI) is a disruption in normal brain function caused by an external force, typically a blow or jolt to the head. TBIs can result from various incidents, including falls, motor vehicle accidents, sports injuries, or violence. The severity of a TBI can range from mild, often referred to as a concussion, to severe, which may lead to long-term complications or even death.

Types of TBI:
Mild TBI: Often results in temporary changes in mental status or consciousness. Symptoms may include headache, confusion, dizziness, or brief loss of consciousness.

Moderate TBI: May cause prolonged unconsciousness (lasting from minutes to hours) and other cognitive impairments. Symptoms can include persistent headaches, confusion, and difficulty with memory and concentration.

Severe TBI: Involves extended periods of unconsciousness or coma and can result in significant brain damage. Long-term effects may include physical, cognitive, and emotional impairments.