Hiccups are sudden, involuntary contractions of the diaphragm. The rushing of air into the lungs causes the epiglottis to close, creating the classing “hic” sound. Hiccups generally resolve on their own, without any intervention. Seek medical attention if hiccups are persistent, or cause distress. The steps below are ONLY anecdotal with no evidence that they work. In most cases, hiccups stop when the person stops thinking about it.