unit : 6(part : 4) Care of unconscious and bedridden patient key – terms Unconscious: Unconsciousness is a condition in which a person is not aware of their surroundings. Pain: It is an unpleasant sensory and emotional experience that occurs due to actual and potential tissue damage. Acute pain: These are episodes of pain that last less than 6 months. Chronic pain: These are episodes of pain that last for