Hiccups are an involuntary contraction of the diaphragm muscle, followed by a sudden closure of the vocal cords, which produces the characteristic hic sound ...

Hiccups, scientifically known as singultus, are involuntary diaphragm contractions often triggered by eating or drinking. While usually brief, persistent hiccups lasting over 48 hours can signal ...

Hiccups occur when the diaphragm contracts suddenly and unintentionally. The diaphragm is your main breathing muscle and separates your lung space from your abdominal space; as it contracts, the air ...