Panic Attacks: What Is Happening in Your Body and What to Do

A panic attack is one of the most frightening experiences a person can have — and one of the most misunderstood. The racing heart, the shortness of breath, the chest tightness, the dizziness, the sense that you might be dying or going mad: all of these are real, physical, intense, and terrifying. They are also — and this is the single most important thing to understand — completely harmless. No one has ever died from a panic attack. Understanding exactly what is happening in your body during a panic attack, and why, is the beginning of taking back control from it.

• Panic attacks are intense but medically harmless — no cardiac events, no loss of control, no going mad.
• They are produced by the body's own stress-response system firing inappropriately.
• Avoidance — the natural response — makes panic disorder significantly worse over time.
• Panic disorder is among the most successfully treated anxiety conditions, typically resolving within 8 to 16 sessions of CBT.

What Is Actually Happening During a Panic Attack

When the brain's threat-detection centre (the amygdala) interprets a situation as dangerous — even when no real danger is present — it triggers a full fight-or-flight response. Adrenaline floods the bloodstream. The heart rate increases dramatically to pump blood to the muscles. Breathing becomes rapid and shallow to oxygenate the blood faster. Blood is redirected from the digestive system and extremities to the large muscle groups. The pupils dilate. All of this happens within seconds.

The physical sensations of a panic attack are the fight-or-flight response at full activation in a situation that does not require it. The pounding heart is not a heart attack — it is a perfectly functioning heart responding to an adrenaline surge. The shortness of breath is not suffocation — it is hyperventilation, which paradoxically makes it feel harder to breathe by reducing carbon dioxide in the blood. The dizziness and tingling are the result of this altered blood chemistry. The sense of unreality (derealisation) is caused by rapid breathing affecting blood flow to the brain.

Nothing is breaking. Nothing dangerous is happening to your body. It is doing exactly what it is designed to do — just in response to the wrong signal.

The Physiology of Hyperventilation

One of the most confusing aspects of panic attacks is that trying to breathe more — which feels like the right response to not getting enough air — makes the symptoms worse. Rapid breathing expels carbon dioxide from the bloodstream faster than the body produces it. Low carbon dioxide causes blood vessels to constrict, reducing blood flow to the brain (producing dizziness and unreality) and causing muscles to cramp (producing the tingling and numbness in hands and lips). Slowing your breathing — even when it feels counterintuitive — directly reverses these symptoms.

What to Do During a Panic Attack

Step 1: Recognise It

Name what is happening: "This is a panic attack. It is not dangerous. It will pass." This single act of naming activates the prefrontal cortex — the brain's rational centre — which begins to dampen the amygdala's alarm signal. The panic attack will not stop immediately, but you have stopped feeding it with catastrophic interpretation.

Step 2: Slow Your Breathing

Box breathing: inhale slowly for 4 counts, hold for 4, exhale slowly for 4, hold for 4. Repeat. The slow exhale is the most important part — it directly activates the parasympathetic nervous system (the body's braking system). If box breathing feels impossible at peak panic, simply focus on making the exhale longer than the inhale: breathe in for 4, out for 6. That asymmetry is enough to begin activating the parasympathetic response.

Step 3: Ground Yourself in the Present

Panic attacks are sustained by focus on the frightening sensations and catastrophic interpretations. Pulling attention into present sensory reality interrupts this cycle. Name five things you can see. Press your feet into the floor and notice the pressure. Hold something cold. Feel the texture of your clothing. These actions do not stop the panic attack instantly, but they keep you in the room rather than in the terror.

Step 4: Allow, Don't Fight

The counterintuitive but powerful insight about panic attacks: fighting the sensations amplifies them. Resistance produces more adrenaline, which intensifies the symptoms. Allowing the panic attack to complete its course — while maintaining slow breathing and grounding — means it typically peaks and subsides within 10 minutes. The body cannot sustain a full adrenaline surge for longer than this. Fighting it, on the other hand, can extend and intensify the experience significantly.

What Triggers Panic Attacks

Panic attacks can be triggered by specific situations (crowded spaces, enclosed spaces, driving, public speaking), by physiological states (caffeine, sleep deprivation, illness, hormonal changes), by anxiety itself (the fear of having a panic attack), or can appear seemingly without any trigger at all. The "apparently spontaneous" panic attack is typically not spontaneous — it is preceded by a period of elevated background anxiety that the person was not consciously tracking.

How Panic Disorder Develops

After a first panic attack, many people become frightened of having another. This fear of fear is the defining feature of panic disorder. To avoid potential triggers — the place where the first attack happened, situations that produce physical arousal, activities that raise the heart rate — the person begins to restrict their life. The avoidance provides short-term relief but teaches the brain that these situations are genuinely dangerous, making the panic system more sensitive, not less. Over time, the list of avoided situations grows and the person's world shrinks.

Treatment: Why Exposure Works

The most effective treatment for panic disorder is CBT with interoceptive exposure — deliberately inducing the physical sensations of panic (spinning in a chair, running on the spot, breathing through a straw) in a safe, controlled setting. This teaches the brain through direct experience that these sensations, while uncomfortable, are not dangerous. Paired with cognitive restructuring (examining and changing the catastrophic interpretations of the sensations), the panic cycle breaks. Most people with panic disorder experience dramatic improvement within 8 to 16 sessions. Minder's therapists trained in CBT for panic disorder are available online.

Frequently Asked Questions

Can a panic attack cause a heart attack?

No. Panic attacks do not cause heart attacks. However, because the symptoms of a panic attack (chest pain, racing heart, shortness of breath) overlap with cardiac symptoms, it is important to have any first episode medically evaluated to rule out cardiac causes. Once cardiac causes have been excluded, recurring episodes are panic attacks.

Why do I get panic attacks at night?

Nocturnal panic attacks are common and particularly distressing because they wake the person from sleep. They occur when the brain's threat-detection system activates during the transition between sleep stages. They are not more dangerous than daytime panic attacks, though they feel more alarming because of the sudden awakening.

Is medication necessary for panic disorder?

Not for most people. CBT alone has very high success rates for panic disorder. For severe cases or when CBT has been partially effective, SSRIs may be added to support the therapeutic work. Short-term benzodiazepines may be used for acute management but are not a long-term solution and carry dependence risk.

My doctor says there is nothing wrong with my heart. Why do I keep having chest pain?

Chest pain from panic attacks is real physical pain — caused by muscle tension, hyperventilation, and adrenaline-driven physiological changes — in a structurally normal heart. The absence of cardiac pathology does not mean the pain is imagined. It means its driver is psychological, and psychological treatment addresses that driver.

How do I explain a panic attack to someone who has never had one?

The closest approximation: imagine the feeling you would have if you slipped off a ledge and caught yourself at the last second — the heart surge, the breathlessness, the shaking. Now imagine that happening in a completely normal situation, with no ledge. That is what a panic attack feels like from the inside.

Can panic disorder be cured completely?

Yes. Panic disorder has one of the highest treatment response rates of any anxiety disorder. The majority of people who complete a course of CBT for panic disorder are panic-free or have only mild residual symptoms that do not significantly affect their lives. Relapse is possible during high-stress periods but typically responds quickly to brief refresher treatment.