These symptoms can last for a long time, or they might come and go.

These symptoms can last from 30 minutes to several hours.

These symptoms can last for months and sometimes even up to 20 years.

You will probably feel better in a few days, but some symptoms may last for several weeks.

These symptoms can last for a few days to several weeks.

The symptoms can begin within one or two hours and may last for several months.

Symptoms usually go away in days or weeks but can last for years.

Symptoms like those of a cold begin and last for several days to 2 weeks.

These symptoms can last for weeks or, in some cases, months.

In healthy women, the symptoms last an average of six days.