Definition
Unconsciousness is a state of being unaware and unresponsive to your surroundings. It's like your brain's 'off' switch has been flipped. When you're unconscious, you can't think, feel, or react to stimuli. It can result from injury, illness, or anesthesia. Think of it as a temporary shutdown of your mental processes. Unlike sleep, you can't be easily awakened from it; it is a deep suspension of awareness.