Hiccough are repeated involuntary spasms of the diaphragm followed by sudden closure of the glottis, which checks the inflow of air and causes the characteristic sound. Transient episodes are very common. Persistent (> 2 days) and intractable (> 1 mo) Hiccough are uncommon but quite distressing.
Also indexed as
Hiccoughfinding of hiccoughshiccupobservation of hiccoughssingultusspasm of diaphragm