"Stroke - A stroke happens when the blood supply to the brain is interrupted. This can also led to the reduction of supply of glucose and oxygen in the affected area and it can eliminate neuronal function. This also instigates an ischemic cascade meaning the cause of neurons dieing or being seriously damaged

It is the 3rd leading cause of death and adult disability amongst the developed countries - United States, and European countries. What is more surprising is that something so serious is extremely easy to act upon and to actually save a life from being ruined.

Although at times it might be difficult to recognize a person who is undergoing a stroke (because their facial expression just seem confused or lost), once a bystander recognize that some one might be having an attack. There are steps a bystander can take in order to identify and act on a person having a stroke.

Just remember these three letters STR

The S stands for the first step a person can take when distinguishing a stroke - Ask the

Individual to Smile.

The Trepresents the second step- Ask the person to Talk or say a simple sentence (Coherently) (i.e. .....it is sunny out today)

The R is the final step a bystander can take - Ask the person under a stroke attach to Raise both arms

Another faster step a person can take is to ask the person under an attack to stick his or her tongue out. If the tongue is crooked, in other terms if his or her tongue falls to one side of the mouth or the other this means that there is a possibility that the person is experiencing a stroke."

http://www.associatedcontent.com/article/365678/how_to_tell_when_someone_is_having.html