Intractable Hiccups
‘Intractable hiccups’ are present if the attack lasts more than 1 month. The incidence and prevalence of persistent and intractable hiccups in the community have not been studied. Hiccups are more common in diseases affecting the gastrointestinal or central nervous systems. Up to 20% of patients with Parkinson's disease and 10% of patients with reflux symptoms complain of recurrent hiccups compared to approximately 3% of controls.