We value brains, but not because we’re zombies. Research has clearly shown how important head trauma can be, so check it out. There is lots to read here!
A concussion is defined as a mild traumatic brain injury, but no single medical definition has been widely accepted.
The World Health Organization cites a trauma resulting in mild physiological disruption of brain function made evident by one or more of the following:
• unconsciousness for up to, but not exceeding, 30 minutes
• loss of memory for up to 24 hours of events just before or after receiving the trauma
• change of mental state, feeling dazed, disoriented or confused
• focal neurological deficits, such as having difficulty moving a specific part of the body, such as the left arm or the right leg.
Eighty to 90 per cent of concussions can be regarded as mild traumas. But it’s difficult to quantify because many concussions go unreported.
Many concussions involve blows to the head, face or neck. But they can also be caused by a blow to the body where the force is transferred to the head.
Some physical symptoms listed by the Canadian Paediatric Society include headache, nausea, vomiting, dizziness, poor co-ordination and problems with vision.
Behavioural changes can include irritability, depression and anxiety.
Cognitive impairment can show up as slowed reaction times, difficulty concentrating or remembering, confusion or feeling dazed or in a fog.
Symptoms usually subside after one to two weeks, and up to three months.
Up to 20 per cent of people with concussions will report symptoms beyond three months.
Source: Concussions Ontario sponsored by the Ontario Neurotrauma Foundation.