When to see a specialist: Though sleep paralysis has not been linked to health problems, consult a doctor if you experience repeated episodes.

Half of these people will experience multiple episodes of back problems.

Most affected individuals experience stroke-like episodes beginning before age 40.

Some people experience multiple episodes within a single week, or even within a single day.

Many people with dysthymia also experience major depressive episodes at some time in their lives.

In general, men are more likely than women to experience repeated episodes of venous thrombosis.

This patient had experienced several episodes of palpitations although she was otherwise well.

Timor-Leste has experienced several major episodes of violent civil disorder in recent years.

Others may experience episodes that last only a few hours from onset to resolution.

Without treatment, a person with bipolar disorder may experience intense episodes of depression.