Anxiety

## What is anxiety?

Anxiety signals threat. In moderate intensity it's adaptive. When excessive or chronic, it can become an anxiety disorder.

## Types

Most common: GAD, panic disorder, phobias, social anxiety and PTSD. They affect about 30% of the population over a lifetime.

## How is anxiety measured?

**GAD-7**, **Beck Anxiety Inventory (BAI)** and **STAI**.