State of unconsciousness where patient cannot be aroused?

The state of unconsciousness where a patient cannot be aroused is called a coma. A coma is a prolonged state of unconsciousness from which a person cannot be awakened, even by vigorous stimulation. It is often caused by severe brain injury or other medical conditions that affect the brain's function. People in a coma are unable to respond to their surroundings and typically require intensive medical care.