Second-impact syndrome

What is Second-impact syndrome?

Second-impact syndrome (SIS) occurs when the brain swells rapidly, and catastrophically, after a person suffers a second concussion before symptoms from an earlier one have subsided.

Questions and answers on "Second-impact syndrome"

I got a concussion last week, and my symptoms have gradually subsided. I am still having headaches though, and plan on going to a neuologist just...

doctor1 MD

Hi there, thank for asking. It is a very good question. Although you have headaches and marijuana subsides it, it is absolutely better not to use...

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My dad slipped and fell on some ice a few hours ago. His head and neck are red and sore, and he said he was feeling tired, nauseous, hand had a...

doctor1 MD

Hello,
You should not wait and immdiately go to the doctot and make his ct scan and brain mri done. Any head injuries should not b taken lightly...

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I was assaulted, struck 3 times on the left side of my head. I regained consciousness on the ground, unsure if/what my head struck. I have general...

doctor1 MD

Hello,
Yes you do need a CT and that too in emergency. It is important to have an assessment of the vital structure, especially brain, inside your...

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