Anxiety is a feeling of worry, nervousness, or unease about something with an uncertain outcome.
In psychology, anxiety is considered a normal and often healthy emotion. However, when a person regularly feels disproportionate levels of anxiety, it might become a medical disorder.
The term "anxiety" can also refer to:
1. Anxiety disorders - a group of mental illnesses including generalized anxiety disorder, panic disorder, etc.
2. Anxiety symptoms - physical manifestations like rapid heartbeat, sweating, or trembling
3. Anxiety in philosophy - existential concerns about life's meaning