Quick version
Distinguishing between a panic attack and atrial fibrillation is not always easy, as the symptoms can be similar. Atrial fibrillation is typically characterized by an irregular heart rhythm and may last from brief episodes to several hours or longer. During a panic attack, palpitations are often rapid but regular and are usually accompanied by intense fear, anxiety, or feelings of unreality.
If you experience recurrent or unexplained palpitations, you should seek medical care for assessment. Atrial fibrillation can be confirmed with an ECG, and longer-term heart rhythm monitoring may sometimes be needed if the symptoms come and go.
Atrial fibrillation, or AFib, is one of the most common types of heart rhythm disorders. Normally, the heart rhythm is controlled by electrical impulses from the sinus node. In atrial fibrillation, the sinus node no longer controls the rhythm of the atria, and the electrical activity in the atria becomes irregular and uncoordinated. This results in an irregular heart rhythm and can increase the risk of complications such as blood clots and stroke. For some people, atrial fibrillation causes only vague discomfort, while others experience clear symptoms such as:
- Heart palpitations (fast, irregular pulse)
- Chest pain or pressure
- Dizziness or feeling faint
- Fatigue
- Shortness of breath
- Exercise intolerance
- Low blood pressure
It is entirely possible and relatively common to have atrial fibrillation without experiencing any symptoms at all – it can be discovered by chance during an ECG examination. However, for some, the symptoms arouse strong anxiety, which in itself can trigger a panic attack and the difference between these conditions can be very similar.
What is a panic attack?
A panic attack is an intense episode of sudden fear or anxiety that often occurs without a clear trigger. It is a reaction from the emotional center of the brain, not a heart problem. However, the symptoms can be just as physically noticeable:
- Heart palpitations
- Trouble breathing or a feeling of suffocation
- Sweating and trembling
- Nausea
- Chest pain or pressure
- Pincerations or numbness
- Feeling of losing control or being disconnected from reality
The similarities between atrial fibrillation and panic attacks are confusing
Since panic attacks can also cause heart palpitations and chest pain, it is easy to mistake something wrong with the heart – or, conversely, to misinterpret atrial fibrillation as anxiety.
The differences in brief
SymptomsAtrial fibrillationPanic attackHeart palpitationsIrregular, often fastFast but often regularChest painCommon, pressure feelingCommon, but more stabbingShortness of breathYesYesFear/AnxietyNot alwaysAlmost alwaysDizzinessYesYesTriggersOften physical strain or illnessOften stress, trauma, anxietyDurationCan last for hours or daysOften 5–30 minutesResponse to deep breathingUnchangedUsually improves
Can one trigger the other?
There is no clear evidence that atrial fibrillation directly causes panic attacks – but frightening symptoms can of course lead to anxiety. Similarly, prolonged anxiety can affect the heart's nerve signals and possibly increase the risk of arrhythmias.
How do I know if I have atrial fibrillation?
The only way to confirm atrial fibrillation is to undergo a heart examination, mainly an ECG. If you suspect you should always seek medical attention – especially if you:
- Have recurrent heart palpitations without a clear cause
- Have shortness of breath or chest pain
- Fainting or feeling close to fainting
Treatment – different approaches for different conditions
Atrial fibrillation
- Diagnosis: ECG, sometimes long-term recording (Holter ECG)
- Treatment:
Medications (beta blockers, antiarrhythmics)
- Lifestyle changes (reduced alcohol intake, weight control, smoking cessation)
- Interventions: cardioversion, ablation, pacemaker
Panic attacks
- Diagnosis: Determined via psychiatric assessment according to DSM-5
- Treatment:
Cognitive behavioral therapy (CBT)
- Anti-anxiety and antidepressant medications
- Stress management, breathing exercises and relaxation techniques



