A concussion is a mild brain injury that can cause temporary memory impairment. A concussion happens when the head receives a hard impact that cannot be absorbed via the fluid that surrounds and protects the brain. When the brain slams into the skull, it can become damaged. The sudden acceleration can also tear the fragile axons throughout the brain.
A concussion can cause temporary unconsciousness, confusion, amnesia and other mental disturbances. Typically, symptoms go away after a few hours to a few days, but some severe concussions can cause permanent impairments such as headaches, sensitivity to light or sound, memory problems, dizziness, depression and anxiety.
The best way to protect yourself from getting a concussion is to wear a proper helmet when participating in any activity that might result in a blow to the head (football, biking, skateboarding, skiing, hockey, etc). Some of the worst concussions happen during car accidents, so be sure to wear your seatbelt and drive safely. You should avoid activities such as boxing, which involve repeated blows to the head. Studies show that multiple concussions can lead to dementia and other memory problems later in life.
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