On rare occasions, hiccups persist even longer than a month or recur frequently over an extended period of time.

Often they are much more complex, although certain elements frequently recur.

Call for an appointment if psoriasis recurs frequently despite treatment.

Nevertheless, some names recur frequently in historical records and current news.

A number of fundamental questions recur frequently as vendors, especially small businesses, attempt to promote and sell their environmental products to the Federal government.

But a yeast infection that recurs frequently is considered a medical problem, because the symptoms can be so disruptive.

If upset stomach continues or recurs frequently, consult a physician.

The vocabulary is spare, but the elements recur frequently, so they acquire power.

Some recur frequently and seem strange only because of usage.

The surgeon can snip off the tumors through the instrument, although they frequently recur.