The following day he left the hospital diagnosed with post-concussion symptoms.
Even after retiring, he continued to suffer post-concussion symptoms for almost two years before finally recovering.
Niedermayer would ultimately miss about two weeks of hockey because of post-concussion symptoms.
"Since vomiting is often a post-concussion symptom, we're concerned."
Eric Lindros still suffers from post-concussion symptoms and it is not certain he will ever play again.
After a full year of post-concussion symptoms he chose to retire from wrestling.
It was the second such injury for Chrebet in as many seasons; he missed half of 2003 with post-concussion symptoms.
It is possible that some post-concussion symptoms are due to physical causes while others are psychological.
It has been convincingly shown that psychological factors play an important role in the presence of post-concussion symptoms.
For most people, post-concussion symptoms go away within a few days to several weeks after the original injury occurs.