A concussion is a type of traumatic brain injury that impairs brain function. Headaches and problems with concentration, memory, balance, and coordination are common side effects.
A blow to the head is usually the cause of a concussion. Concussions can also be caused by violent shaking of the head and upper body.
Some concussions cause loss of consciousness, but the majority do not.
WHAT ARE THE SYMPTOMS?
Concussion signs and symptoms can be subtle and may not appear right away. Symptoms can last for several days, weeks, or even months.
Headache, memory loss (amnesia), and confusion are common symptoms of a concussive traumatic brain injury. Typically, amnesia involves forgetting the event that caused the concussion.
Physical signs and symptoms may include:
- Ringing in the ears
- Fatigue or drowsiness
- Blurry vision
WHAT ARE THE CAUSES & RISK FACTORS?
The most common cause of concussion is a fall. Concussions are also common in contact sports like football or soccer.