Cognitive Connie
Fear, Anxiety & Panic: Core Concepts
Three terms sit at the heart of every anxiety disorder: fear, anxiety, and panic attack. They are often used interchangeably in everyday language, but clinically and theoretically they refer to distinct states with different triggers, time orientations, and physiological profiles. Getting these distinctions right is the first step to understanding how anxiety disorders are classified, explained, and treated.
Key concepts
Fear↗
An emotional and physiological response to a perceived immediate threat. Fear triggers the fight-or-flight response — rapid heart rate, increased respiration, muscle tension, and narrowed attention — and is adaptive when the threat is real. In anxiety disorders, fear is disproportionate to, or independent of, actual danger.
Anxiety
The state of apprehensive anticipation about a perceived future threat. Unlike fear, which is acute and present-focused, anxiety is sustained and forward-looking — involving worry, hypervigilance, and physiological arousal about something that might happen. Because the threat is anticipated rather than present, anxiety can be difficult to escape and tends to persist.
Panic Attack
An abrupt surge of intense fear representing the fear response to a perceived immediate threat — even when no objective threat is present. Panic attacks involve a rapid onset of physical symptoms (palpitations, shortness of breath, dizziness, chest pain) and a sense of impending doom. The perceived threat is often internal: bodily sensations misinterpreted as catastrophic (e.g., heart palpitations misread as a heart attack).
Test your knowledge
Frequently asked questions
What is the key difference between fear and anxiety?+
The key difference is temporal orientation. Fear is a response to a perceived immediate threat — something happening now or imminently — and it triggers a rapid, intense fight-or-flight response. Anxiety is a response to a perceived future threat — something that might happen — and it involves sustained apprehension, worry, and physiological arousal rather than a single acute alarm. In clinical terms, specific phobia is closer to fear (triggered by a present stimulus), while GAD is the prototypical anxiety disorder (dominated by worry about future events).
How is a panic attack different from an anxiety attack?+
"Anxiety attack" is not a formal diagnostic term — it is used colloquially to describe intense anxiety. A panic attack, by contrast, has a specific DSM-5 definition: an abrupt surge of intense fear or discomfort that reaches a peak within minutes and involves at least four physical and/or cognitive symptoms (palpitations, sweating, trembling, shortness of breath, chest pain, dizziness, nausea, chills, paraesthesia, derealisation/depersonalisation, fear of losing control, fear of dying). The defining feature of a panic attack is its acute onset and intensity — it feels like a sudden emergency rather than a gradual build of worry.
Sources
Last reviewed July 2025- 1.
American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). APA Publishing.
+About this source
Authoritative diagnostic criteria for anxiety disorders, including the distinction between fear and anxiety and panic attack definition.
- 2.
Barlow, D. H. (2002). Anxiety and its disorders: The nature and treatment of anxiety and panic (2nd ed.). Guilford Press.
+About this source
Comprehensive theoretical account of anxiety, covering threat appraisal, the anxiety–fear distinction, and the cognitive-behavioural model.
- 3.
LeDoux, J. E. (2015). Anxious: Using the brain to understand and treat fear and anxiety. Viking.
+About this source
Neuroscientific account of fear and anxiety circuits, distinguishing the two states at the neural level.