Hiccups are sudden, involuntary contractions of the diaphragm, the muscle that separates the chest from the abdomen and plays a key role in breathing. These contractions cause the vocal cords to close ...

What Are Hiccups?- Hiccups are sudden, involuntary spasms of the diaphragm, the muscle located between the lungs and stomach.- This spasm pulls air into the throat, causing the vocal cords to close ...