Common examples of anxiety include:
- A chronic, high level of anxiety may be a sign of an anxiety disorder.
- Generalized anxiety disorder involves persistent and excessive anxiety for at least six months.
- Having a specific phobia means becoming anxious when exposed to a specific circumstance.
- Social phobia is characterized by anxiety in social or performance situations.
- A person with panic disorder experiences recurrent, unexpected panic attacks.
- Agoraphobia involves anxiety about having panic attacks in difficult or embarrassing situations.
- Obsessive-compulsive disorder entails obsessions, compulsions, or both.
- Post–traumatic stress disorder is a set of psychological and physiological responses to a highly traumatic event.
- Biological factors implicated in the onset of anxiety disorders include genes, different sensitivity to anxiety, the neurotransmitters GABA and serotonin, and brain damage.
- Conditioning and learning may contribute to the development of phobias.
- Some styles of thinking may make people more susceptible to anxiety disorders.