
Panic attacks: what is actually happening in your body
In brief
A panic attack is a false alarm executed perfectly by a healthy system. Understanding the mechanics — heart, breath, adrenaline — is itself the beginning of treatment.
A panic attack is your threat system doing its job flawlessly, at the wrong moment. Adrenaline surges. Your heart accelerates to move blood to large muscles. Breathing quickens. Digestion pauses. Every one of these is survival engineering — and every one, misread, becomes terrifying.
The misreading is the disorder
A racing heart gets read as a heart attack; breathlessness as suffocation; unreality as 'going crazy.' The catastrophic reading triggers more adrenaline, which produces more symptoms, which confirms the reading. That loop — not the sensations themselves — is what we treat.
Cognitive-behavioral treatment for panic is short, structured, and remarkably effective: most protocols run around twelve sessions. We retrain the interpretation, then carefully reintroduce the feared sensations until your body relearns that a fast heart is just a fast heart.
One caveat belongs in every honest article on this topic: new cardiac symptoms deserve a physician's evaluation first. Rule out the body; then treat the alarm.
About the author

Dr. Elena Voss, PhD
Ph.D., ABPP · Board-certified clinical psychologist
Dr. Voss is a board-certified clinical psychologist specializing in assessment, anxiety disorders, OCD, and trauma. Fifteen years across MGH, the VA, and private practice inform everything she writes here — evidence first, plain language always.