Injuries in the central nervous system (CNS)—such as those in the spinal cord—trigger glial scar formation, which inhibits nerve regeneration from healthy neurons surrounding the damage. This results ...

Sleep paralysis is "a condition where you feel paralyzed just before falling asleep or, more commonly, when you first wake up in the morning," says Kevin Walker, MD, the medical director of ...

You wake up out of a murky sleep and find that you’re unable to move your body, from your forehead all the way down to your little toe. You’re completely paralyzed! You also have a crushing feeling in ...

The moment half your body stops responding to your commands ranks among the most frightening experiences imaginable. Whether you’re the one affected or witnessing it happen to someone else, ...

Imagine waking up in pitch darkness to a slavering monster with blood dripping down its fangs. You try to cry out for help but can’t. You're paralyzed from head to toe! Sleep paralysis—paralysis upon ...

Sleep paralysis happens when you wake up but can't move for a few minutes. Stress and anxiety can trigger episodes of sleep paralysis. Sleep paralysis isn't dangerous, but it can make you feel uneasy.