Skip navigation
   Other Topics: A B C D E F G H I J K L M N O P Q R S T U V W XYZ All Topics

Coma

 

 
 

A coma is a deep state of unconsciousness. An individual in a coma is alive but unable to move or respond to his or her environment. Coma may occur as a complication of an underlying illness, or as a result of injuries, such as brain injury.

A coma rarely lasts more than 2 to 4 weeks. The outcome for coma depends on the cause, severity, and site of the damage. People may come out of a coma with physical, intellectual, and psychological problems. Some people may remain in a coma for years or even decades. For those people, the most common cause of death is infection, such as pneumonia.

NIH: National Institute of Neurological Disorders and Stroke

 
  • Start Here

    • ComaFrom the National Institutes of Health(National Institute of Neurological Disorders and Stroke) - Short Summary
    • Also available in Spanish

 

 
 
Basics Learn More Multimedia & Cool Tools
  • No links available

 

 
Research Reference Shelf For You

 

 

 

Illustration of the brain

MEDICAL ENCYCLOPEDIA  

National Institutes of Health

 

  • MedlinePlus links to health information from the National Institutes of Health and other federal government agencies. MedlinePlus also links to health information from non-government Web sites. See our disclaimer about external links and our quality guidelines.

 

 

 

MedlinePlus links to health information from the National Institutes of Health and other federal government agencies. MedlinePlus also links to health information from non-government Web sites. See our disclaimer about external links and our quality guidelines.