The Glasgow Coma Scale (GCS) is a standard method for evaluating the extent of brain damage and predicting a patient's prognosis .Eye response, verbal response, and motor response ,Scores on the Glasgow Coma Scale (GCS) vary from 3 to 15, with lower values indicating greater disability. Patients with head traumas or acute brain damage are frequently assessed with the Glasgow Coma Scale (GCS) to help direct emergency care. It's useful for establishing whether or not airway management and care are required