A<unk>  (scientific name singultus, from a Latin word meaning "to catch one's breath while sobbing"; also spelled hiccough) is an involuntary contraction (myoclonic jerk) of the diaphragm that may repeat several times per minute. The<unk>  is an involuntary action involving a reflex arc. Once triggered, the reflex causes a strong contraction of the diaphragm followed about a quarter of a second later by closure of the vocal cords, which results in the "hic" sound.<unk> s may occur individually, or they may occur in bouts. The rhythm of the<unk> , or the time between<unk> s, tends to be relatively constant. A bout of<unk> s generally resolves itself without intervention, although many home remedies are often used to attempt to shorten the duration. Medical treatment is occasionally necessary in cases of chronic<unk> s.
Hiccup
Sleepwalking
Drooling
Hypersomnia
Stuttering
Snatiation
Orthosomnia
Kussmaul breathing