Singultus
Hiccups occur when the diaphragm suddenly and involuntarily contracts (tightens), resulting in a hiccup sound being produced at the top of the windpipe.
Hiccups occur when your diaphragm (the thin layer of muscle that separates your chest cavity from your abdomen) suddenly and involuntarily contracts (tightens).
Most cases of hiccups do not require medical treatment and will usually stop after a short period of time.