Anxiety and Fear
While both are concerning and can be helped through psychotherapy, worry and anxiety disorders are very different. Typically, anxiety disorders include excessive fear and anxiety which impacts and affects daily living.
While fear can be a helpful emotion in the face of imminent threat, anxiety is often related to anticipated future threats. Sometimes the threat is not actually known but the fear response is experienced. This can result in hyper-vigilance, cautious or avoidant behaviors, and sometimes panic attacks.
American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Washington, DC: Author.