Definition
A blush is a temporary reddening of the face, typically caused by embarrassment, shame, or excitement. It's an involuntary physiological response that occurs when blood vessels near the skin's surface dilate. Unlike a tan, which is caused by sun exposure, a blush is a fleeting reaction to emotions. Think of it as your body's way of revealing your inner feelings. Blushing is a common human experience, especially during adolescence.