In a nutshell
With hiccups, the inspiratory muscles contract suddenly, followed by the characteristic hic. Brief episodes usually disappear on their own.
Why does it happen?
A reflex network links, among other things, vagal and phrenic pathways with central processing sites. A sudden inspiratory signal primarily activates the diaphragm. The rapidly following closure of the glottis interrupts airflow and produces the typical sound.
Frequency
Brief hiccups are very common. Prolonged or recurrent episodes should be distinguished from them.
Frequency is a qualitative description, not your individual probability.
Is it normal?
Short-lived hiccups are usually harmless.
When to seek advice
Seek medical assessment if they last more than 48 hours or substantially impair eating, sleep, or breathing.
Does this happen to you?
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Sources (1)
- Hiccups: a common problem with some unusual causes and cures (opens a new tab)
Hiccups involve involuntary inspiratory contractions and glottis closure; longer-lasting episodes require evaluation of their cause.
Editorial update: . AI-assisted research and editing; not individually reviewed by a physician. How we research
