These may appear three or four times a year and last up to a week.

These could be one day or last up to six weeks.

Some of his sets have been known to last up to 8 hours.

The trial is expected to last up to three weeks.

They usually begin soon after the shot, and can last up to a week.

This is common and may last up to 72 hours following the test.

It may last up to several months or even a year.

Easy to look after, cut trees will last up to three weeks.

They may come every three minutes and last up to a minute each.

Other drugs will be felt in around an hour and then their effects can last up to several days.