A hiccup, medically known as SDF (synchronous diaphragmatic flutter) or singultus, is a sudden, involuntary contraction of the diaphragm which occurs at the same time as a contraction of the voice box (larynx) and total closure of the glottis, effectively blocking air intake. The glottis is the middle part of the larynx, where the vocal cords are located. Hiccups may also be spelled "hiccoughs." According to Medilexicon's medical dictionary, hiccup is: "A diaphragmatic spasm causing a sudden inhalation that is interrupted by a spasmodic closure of the glottis, producing a noise." Hiccups, which can occur individually or in bouts, commonly happen rhythmically - the interval between each hiccup is relatively constant.
Most people find them to be a minor nuisance. However, prolonged hiccups can became a serious medical problem and require treatment. Prolonged hiccups affect men much more…