JoJoBro

A concussion is a brain injury that results in a temporary loss of normal brain function. The damage occurs when the brain hits the inside of the skull, then rebounds and hits the opposite side of the skull. Symptoms may include headache, confusion, lack of coordination, memory loss, nausea, vomiting, dizziness, ringing in the ears, sleepiness, and excessive fatigue. Although the symptoms of a concussion may be temporary, repeated injury may cause permanent damage. This is medically called traumatic encephalopathy (CTE), a degenerative brain dis3ase that results from repeated hits to the head. A blow to the brain like a concussion can cause cell damage. Some effects of cell damage include headaches, difficulty concentrating and memory loss. An impact to the head that causes a concussion can also cause the brain’s long nerve cells (neurons) to stretch and rupture. Some nerve cells can recover from injury, but more severely injured cells lose their ability to send signals.During the initial impact, the internal structures of the brain can move at different speeds, which can cause bundles of axons to stretch, twist and shear. Those nerve cells that are damaged can become leaky and dysfunctional, starting a cascade of actions and reactions. The immune system sends in cells in response to the damage, which causes inflammation. Tiny blood vessels can rupture, causing microscopic areas of bleeding. Blood flow to the damaged area is reduced, causing an energy crisis. As the pumps in the nerve cell membrane furiously try to restore a proper chemical balance, they run out of fuel

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