ometimes when you least expect it. Its causes are often very difficult to identify. It embarrasses and makes not the best journalists to pursue an interview or comment online. Formidable phenomenon for any speaker, hiccups keep a good share of mystery. Harmless in most cases, it is much less in the most extreme cases: the syndrome of persistent hiccups, which affects one in 100,000, may take several days or even years! How to get rid of them? Everyone has an idea but only one is 100% effective...