With 56 million people worldwide suffering from concussion each year, the short-term symptoms such as a headache, nausea, sensitivity to light and problems concentrating are common. However, long-term symptoms are also prevalent and include fatigue, trouble sleeping and concentrating, and emotional distress. A recent study published in Brain found that almost half of people who suffer a concussion do not fully recover six months after their injury. The study analyzed brain scans from over 100 patients who had recently experienced concussion from all across Europe, using a technique called resting-state functional MRI which measures brain activity when a person is at rest. Unlike CT scans or MRI which only look for structural changes in the brain such as inflammation or bruising, a resting-state fMRI can identify more subtle changes in brain function, which could help to predict who is more likely to develop long-term symptoms. The study found that an increased functional connectivity between the thalamus and the rest of the brain very shortly after injury was associated with post-concussive symptoms. It shows that even a single brain injury can have clear consequences, which may not show up in routine scans, suggesting it may be time to expand the types of imaging used.
New Study Finds Post-Concussive Symptoms are More Common and Long-Lasting than Previously Thought
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