What a panic attack actually is
According to the National Institute of Mental Health, a panic attack is a sudden surge of intense fear that peaks within minutes, with strong physical symptoms: racing heart, breathlessness, dizziness, trembling. It is the body’s alarm system firing at full strength without a fire. The attack itself is not dangerous, but nobody who has had one needs telling how convincing it feels.
Panic disorder is what develops around the attacks: weeks or months of worrying about the next one, and a shrinking list of places that feel safe to be if it comes.
What happens in the body during an attack
Understanding the mechanism is not a consolation prize, for panic specifically, it is part of the treatment, because every symptom in the list has a boring physiological explanation:
- Adrenaline releases, and the heart speeds up to move blood to the muscles. That is the pounding chest.
- Breathing goes fast and shallow, which drops carbon dioxide and produces the dizziness, the tingling hands and the feeling of not getting enough air. While you are in fact getting plenty.
- Blood shifts to the large muscles, leaving hands and feet cold and numb.
- The digestive system pauses, which is the nausea and the churn.
- Perception narrows and sharpens, which can feel like unreality or detachment.
None of it is dangerous, and all of it peaks and falls within minutes because the body cannot sustain that state. The danger a panic attack announces is the one thing about it that is not real.
How panic disorder is diagnosed
Two things have to be established, and the first one belongs partly to your medical doctor.
One: that the attacks are panic attacks. Chest pain, breathlessness and palpitations deserve a medical workup, and we would never discourage one. Thyroid disease, heart rhythm problems, asthma, certain medications, stimulants and alcohol withdrawal can all produce something that feels identical. Panic becomes the working explanation when those investigations keep returning clear and the attacks keep returning anyway.
Two: that panic disorder, not just panic attacks, is present. In a psychiatric evaluation that means asking whether attacks come unexpectedly rather than only in one predictable feared situation, whether they have repeated, and whether the month since has been spent worrying about the next one or rearranging your life around it. That last part is the disorder, and it is the part most people never think to mention.
What causes it
There is no single cause. Panic disorder runs in families, which points at inherited biology, and first attacks frequently arrive during a period of stress, loss, illness or major life change, often, oddly, just after the crisis has passed rather than during it.
What keeps it going is better understood than what starts it, and it is a loop: an attack teaches you to fear the sensations, fearing the sensations makes you monitor your body constantly, monitoring finds something (everyone’s heart occasionally skips), and the alarm about that finding triggers the next attack. Avoidance then seals the loop by removing every chance to learn otherwise. Treatment works by breaking that circuit, which is why it works so reliably.
How treatment works here
After a psychiatric evaluation, which includes making sure nothing medical is masquerading as panic. CBT does the heavy lifting. CBT for panic is specific: you learn what each symptom actually is (a racing heart is adrenaline, not a heart attack), then deliberately practise with the sensations in session until they lose their authority. Where avoidance has taken territory, gradual exposure takes it back.
Medication is a useful second lever for many people, sometimes briefly, to make therapy possible; sometimes longer. It is always a decision made with you, reviewed as you improve.
When to reach out
If you have had more than one attack and the fear of the next one is steering your choices. What you drive past, what you decline, what you carry “just in case”. Treatment can interrupt this far earlier than most people believe. The evaluation is a conversation in a chair, at your pace.