While hiccups are usually harmless and don't last long in most people, some individuals can experience them chronically.

There is only one FDA approved medication for hiccups, and it is used for cases that are not considered "mild," lasting ... However, prolonged bouts, labeled “intractable,” can signal a number of ...

Moreover, there are a number of underlying medical conditions, like asthma, that can cause hiccups, and certain medications can ... in 1988 “Termination of intractable hiccups with digital ...