A panic attack feels like your body has hit a full emergency alarm when there’s no actual emergency. Your heart pounds, your chest tightens, your hands tingle, and a wave of terror washes over you so intense that many people genuinely believe they’re dying or losing their mind. Symptoms typically peak within about 10 minutes, but those minutes can feel like they stretch on forever.
What Happens Inside Your Body
A panic attack starts in the brain. The amygdala, your brain’s threat-detection center, fires off a distress signal to the hypothalamus, which acts as a command center for involuntary body functions like heart rate, breathing, and blood pressure. The hypothalamus activates your sympathetic nervous system, the internal “gas pedal” that triggers the fight-or-flight response.
Your adrenal glands then pump adrenaline into your bloodstream. That single hormone is responsible for most of what you physically feel: your heart beats faster, pushing blood toward your muscles and vital organs. Your breathing speeds up. Your pupils dilate. Your muscles tense. All of this is your body preparing to fight or run from a threat that, in the case of a panic attack, doesn’t exist. The mismatch between the intensity of the physical response and the absence of real danger is what makes panic attacks so disorienting and frightening.
The Physical Sensations
The most commonly reported feeling is a racing or pounding heart. It can feel like your heart is slamming against your ribcage or skipping beats. This alone convinces many first-time sufferers they’re having a heart attack.
Chest tightness or pain often accompanies the pounding heart. You may also feel like you can’t get enough air, even though you’re actually breathing too fast. This rapid breathing, called hyperventilation, drops the carbon dioxide levels in your blood, which causes blood vessels to narrow, including those supplying your brain. That’s what produces the tingling and numbness many people feel in their hands, arms, feet, or around their mouth. It’s not nerve damage. It’s a temporary chemical shift caused by breathing too quickly.
Other physical sensations during an attack can include:
- Sweating or chills, sometimes alternating between the two
- Trembling or shaking in your hands, legs, or throughout your body
- Nausea or stomach churning, sometimes with a feeling that you might vomit
- Dizziness or lightheadedness, which can make you feel like you’re about to faint
- A lump in your throat or a choking sensation
- Hot flashes that seem to come from nowhere
These sensations feed on each other. Your heart races, which makes you more anxious, which makes your heart race faster. That feedback loop is part of why panic attacks escalate so quickly.
The Psychological Experience
The physical symptoms are alarming enough, but the psychological layer is what people often struggle most to describe afterward. Many people report an overwhelming sense of doom, a certainty that something catastrophic is about to happen. You might think you’re about to die, that you’re having a stroke, or that you’re “going crazy.”
Some people experience depersonalization, a strange feeling of being detached from yourself. It can feel like you’re watching your own body from the outside, like floating above yourself, or like your movements aren’t under your control. Your limbs might seem like they belong to someone else, or your head might feel like it’s wrapped in cotton.
Others experience derealization, where the world around you suddenly feels fake. People describe it as feeling like they’re living in a movie or a dream, or being separated from the people around them by a glass wall. You can see everything, hear everything, but none of it feels real. These sensations are temporary and not a sign of a psychiatric break, but in the moment, they’re deeply unsettling. The fear of “going crazy” can itself become a focus that prolongs the experience.
How Long It Lasts
Most panic attacks peak in intensity within about 10 minutes. The entire episode typically lasts somewhere between 10 and 30 minutes, though some people report waves that come and go over the course of an hour or more. After the peak passes, the symptoms gradually ease as your parasympathetic nervous system, essentially the body’s “brake pedal,” kicks in to counterbalance the adrenaline surge.
Even after the acute symptoms fade, you won’t necessarily feel normal right away. Many people experience what’s sometimes called a panic attack “hangover,” a period of hours where you feel profoundly drained. Common aftereffects include deep fatigue, brain fog, muscle soreness, body aches, trembling, and abdominal discomfort. Some people also feel lingering chest soreness. This is your body recovering from a massive adrenaline dump, and it’s a normal part of the process. Think of it like the exhaustion you’d feel after sprinting at full speed. Your body did the physiological equivalent, even though you were sitting still.
Panic Attack vs. Heart Attack
Because chest pain, shortness of breath, and a sense of impending doom show up in both panic attacks and heart attacks, the two are frequently confused. There are some patterns that can help distinguish them, though if you’re ever unsure, treating it as a cardiac event is the safer choice.
Heart attacks most often start slowly, with mild pain or discomfort that gradually worsens over several minutes. The chest pain tends to feel like pressure or squeezing and may radiate into the left arm, jaw, or back. Physical exertion often makes it worse. Women are somewhat more likely to experience shortness of breath, nausea, and back or jaw pain rather than classic chest pain.
Panic attacks, by contrast, come on quickly and hit peak intensity within about 10 minutes. The chest pain is more often sharp or stabbing rather than a heavy pressure, and it usually stays localized rather than spreading to the arm or jaw. Tingling in the hands and the feeling of unreality are common in panic attacks but rare in heart attacks. If the symptoms start to ease after 10 to 20 minutes, that pattern is more consistent with panic.
Grounding Yourself During an Attack
One of the most effective techniques for interrupting a panic attack is called 5-4-3-2-1 grounding. It works by redirecting your brain’s attention away from the internal alarm and toward concrete sensory input, which can help slow the feedback loop that keeps the panic escalating.
Start by naming five things you can see around you, anything at all: a crack in the ceiling, the color of a chair, a pen on a desk. Then identify four things you can physically touch, like the texture of your clothing, the ground under your feet, or the surface of a table. Next, listen for three distinct sounds outside your body. Then find two things you can smell. If nothing is obvious, walk to a bathroom and smell soap, or step outside. Finally, notice one thing you can taste, even if it’s just the lingering flavor of coffee or toothpaste.
The technique works because your brain has difficulty maintaining a full threat response while simultaneously cataloging sensory details. It pulls you out of the spiral of internal monitoring (“Is my heart still racing? Am I still breathing?”) and anchors you in the physical world. Slowing your breathing also helps. Try to extend your exhale so it’s longer than your inhale, which signals your nervous system to activate the calming “brake pedal” response.
For people who experience repeated panic attacks, the fear of having another one can itself become a trigger, creating a cycle where anticipatory anxiety increases the likelihood of future episodes. This pattern, when it persists, is what clinicians call panic disorder. Cognitive behavioral therapy has strong evidence for breaking this cycle by helping people reinterpret the physical sensations so the body’s alarm system stops treating its own adrenaline as a threat.