Unconsciousness due to low health

During combat, unconsciousness is often a preamble to death. It occurs when your health has reached but 10% of its maximum level. While unconscious you will be unaware of your surroundings, helpless and slowly regaining your health until you are awake once more - from there see quickly to your wounds or whatever malady ails you. As soon as your health reaches zero your character will die and be subjected to whatever penalties that involves.