Traumatic brain injury usually results from a blow or jolt to the head or body. An object that goes through brain tissue can also cause traumatic brain injury.
Mild traumatic brain injury may affect your brain cells temporarily. More serious traumatic brain injury can result in bruising, torn tissue, bleeding and other physical damage to the brain. These injuries can result in long-term complications or death.
Traumatic brain injuries may be treated as an emergency. Treatment is based on the severity of the injury.
Traumatic brain injury can have wide-ranging physical and psychological effects. Some signs or symptoms may appear immediately after the traumatic event, while others may appear days or weeks later.
Mild traumatic brain injury
The signs and symptoms of mild traumatic brain injury may include:
Moderate to severe traumatic brain injuries
Moderate to severe traumatic brain injuries can include any signs and symptoms of mild injury and the symptoms below. These symptoms may appear within the first hours to days after a head injury:
Traumatic brain injuries are usually caused by a blow or other traumatic injury to the head or body. The degree of damage can depend on several factors, including the nature of the injury and the force of impact.
Common events causing traumatic brain injury include the following:
A medical exam is the first step to diagnose a potential brain injury. Assessment usually includes a neurological exam to evaluate thinking, motor function (movement), sensory function, coordination, eye movement, and reflexes.
Imaging tests, including CT and MRI scans, cannot detect all traumatic brain injuries but can discover bleeding that may require immediate medical or surgical attention.
Treatment is based on the severity of the injury. Mild traumatic brain injuries usually require no treatment other than rest and over-the-counter pain relief to treat a headache. However, a person with a mild traumatic brain injury must be monitored closely at home for any persistent, worsening or new symptoms.
Emergency care for moderate to severe traumatic brain injuries focuses on ensuring the patient has enough oxygen, and adequate blood supply, maintaining blood pressure, and preventing further damage to the head or neck.
People with severe injuries may also have other injuries that need to be addressed. Additional treatments in a hospital’s emergency room or intensive care unit will minimise secondary damage due to inflammation, bleeding or reduced oxygen supply to the brain.
Emergency surgery may be required to minimise additional damage to brain tissue, including: