It heats the air it zips through to five times the surface temperature of the sun. Still, around 90 percent of lightning-strike victims survive. Over the past three decades, lightning has killed an average of 51 people per year in the U.S. but left more than 500 injured and alive.
Computer vision syndrome. Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time.
Post-concussion syndrome, also known as postconcussive syndrome or PCS, is a set of symptoms that may continue for weeks, months, or a year or more after a concussion â a minor form of traumatic brain injury (TBI). diagnosis may be made when symptoms resulting from concussion last for more than three months after the injury. Loss of consciousness is not required for a diagnosis of concussion or post-concussion syndrome.