And in some cases short-term solutions are likely to lead to other unexpected problems.

But the officials said the measure has caused new and unexpected problems.

When you're finally set to sleep or go home, nothing is more frustrating than a patient having unexpected problems.

Children have proved an unexpected problem to some of those in hiding.

The early test also brought to light an unexpected technical problem.

Two factors seem to have caused unexpected problems last year.

Well, now that news was another unexpected and unwanted problem.

Then steel workers in the hills above the city reported an unexpected problem.

At the same time, they are encountering unexpected problems along the way.

An unexpected medical problem that happens during treatment with a drug or other therapy.