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A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. [8] Symptoms may include headache, dizziness, difficulty with thinking and concentration, sleep disturbances, mood changes, a brief period of memory loss, brief loss of consciousness; problems with balance; nausea; blurred vision; and mood changes.
According to the Centers for Disease Control, about 1.5 people die each year from a concussion in the US; [need quotation to verify] in most of these cases, the person had received another concussion previously. [13] In the presence of second-impact syndrome, the mortality rate is at best 50% when diffuse cerebral swelling occurs. [44]
A traumatic brain injury (TBI), also known as an intracranial injury, is an injury to the brain caused by an external force. TBI can be classified based on severity ranging from mild traumatic brain injury (mTBI/concussion) to severe traumatic brain injury. [5]
A concussion is a form of a mild traumatic brain injury (TBI). This injury is a result due to a blow to the head that could make the person's physical, cognitive, and emotional behaviors irregular. Symptoms may include clumsiness, fatigue , confusion , nausea , blurry vision , headaches , and others. [ 7 ]
A concussion can cause headaches, changes in alertness, loss of consciousness, memory loss, and changes in thinking, according to Penn Medicine. In rare cases, these effects can be long-lasting ...
A common symptom of PTA is confusion. The most prominent symptom of post-traumatic amnesia (PTA) is a loss of memory of the present time. [10] As a result, patients are often unaware of their condition and may behave as if they are going about their regular lives.
Mild TBI, including concussion, often occurs during athletic activity, military service, or as a result of untreated epilepsy, and its effects are typically short-term. More severe injuries to the brain cause moderate TBI, which may cause confusion or lethargy, or severe TBI, which may result in a coma or a secondary brain injury.
A concussion is a type of mild traumatic brain injury resulting in a chemical change in the brain and has the potential to cause damage to brain tissue. This can occur when a person sustains a hit or blow that causes the head and brain to move quickly, causing the brain to bounce in the skull. [ 21 ]