Anxiety

Definition

A feeling of worry, nervousness, unease typically about an imminent event or something with an uncertain outcome.

Related terms

Anxiety Disorders:

A group of mental disorders characterized by significant feelings of anxiety and fear.

Generalized Anxiety Disorder (GAD):

As mentioned above, this is chronic anxiety not tied to any specific threat.

Panic Disorder:

Also mentioned above, this disorder involves frequent panic attacks without any reasonable cause.