A<unk>  is not a specific disease. Instead, it is a deep state of unconsciousness, during which an individual is not able to respond to stimulation.<unk>  can be caused by underlying diseases, including stroke, head injury, seizures, brain tumors, brain infections, hypoxia, and diabetic hyperosmolar<unk>  or hypoglycemia. The main signs of<unk>  is loss of consciousness. Meidcal history, physical examination, neurological evaluation and head images may help find the cause of<unk> . Patients with<unk>  require immediate treatment in order to avoid serious consequences. Treatments include treating the underlying diseases, maintaining a healthy physical state, preventing infections, and physical therapy. The prognosis of<unk>  depends on the underlying causes, the severity and the site of neurological damage. Someone can recover, while some may keep in a vegetative state.
Coma
Glioma
Brain abscess
Hematoma
Brain tumor
Aneurysm
Subdural hematoma
Subdural empyema