Unconsciousness state, also known as a COMA, is a medical condition in which a person is unresponsive and has minimal brain activity. It is usually caused by an injury to the brain, such as a stroke or traumatic brain injury, or a medical condition such as diabetes or an infection. COMA can last for days, weeks, or even months, depending on the severity of the injury or illness. Treatment for COMA typically involves supportive care and rehabilitation to help the patient regain consciousness.